diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-11-28 12:25:35 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-11-28 12:25:35 +0000 |
| commit | 16178e1c45a76544d34ce63db37932838353637c (patch) | |
| tree | b5dbcc988f6d518819b9182f60b8ae6f81bbf61b /os/hal/platforms/LPC214x | |
| parent | 9b10a6c67a38fa040eb62e63190aed0880ead8ec (diff) | |
| download | ChibiOS-16178e1c45a76544d34ce63db37932838353637c.tar.gz ChibiOS-16178e1c45a76544d34ce63db37932838353637c.tar.bz2 ChibiOS-16178e1c45a76544d34ce63db37932838353637c.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1333 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/LPC214x')
| -rw-r--r-- | os/hal/platforms/LPC214x/lpc214x.h | 523 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/lpc214x_ssp.c | 133 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/lpc214x_ssp.h | 54 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/pal_lld.c | 89 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/pal_lld.h | 253 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/platform.dox | 84 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/serial_lld.c | 337 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/serial_lld.h | 174 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/vic.c | 63 | ||||
| -rw-r--r-- | os/hal/platforms/LPC214x/vic.h | 41 |
10 files changed, 1751 insertions, 0 deletions
diff --git a/os/hal/platforms/LPC214x/lpc214x.h b/os/hal/platforms/LPC214x/lpc214x.h new file mode 100644 index 000000000..e260da713 --- /dev/null +++ b/os/hal/platforms/LPC214x/lpc214x.h @@ -0,0 +1,523 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file lpc214x.h
+ * @brief LPC214x register definitions
+ */
+
+#ifndef _LPC214X_H_
+#define _LPC214X_H_
+
+typedef volatile unsigned char IOREG8;
+typedef volatile unsigned int IOREG32;
+
+/*
+ * System.
+ */
+#define MEMMAP (*((IOREG32 *)0xE01FC040))
+#define PCON (*((IOREG32 *)0xE01FC0C0))
+#define PCONP (*((IOREG32 *)0xE01FC0C4))
+#define VPBDIV (*((IOREG32 *)0xE01FC100))
+#define EXTINT (*((IOREG32 *)0xE01FC140))
+#define INTWAKE (*((IOREG32 *)0xE01FC144))
+#define EXTMODE (*((IOREG32 *)0xE01FC148))
+#define EXTPOLAR (*((IOREG32 *)0xE01FC14C))
+#define RSID (*((IOREG32 *)0xE01FC180))
+#define CSPR (*((IOREG32 *)0xE01FC184))
+#define SCS (*((IOREG32 *)0xE01FC1A0))
+
+#define VPD_D4 0
+#define VPD_D1 1
+#define VPD_D2 2
+#define VPD_RESERVED 3
+
+#define PCTIM0 (1 << 1)
+#define PCTIM1 (1 << 2)
+#define PCUART0 (1 << 3)
+#define PCUART1 (1 << 4)
+#define PCPWM0 (1 << 5)
+#define PCI2C0 (1 << 7)
+#define PCSPI0 (1 << 8)
+#define PCRTC (1 << 9)
+#define PCSPI1 (1 << 10)
+#define PCAD0 (1 << 12)
+#define PCI2C1 (1 << 19)
+#define PCAD1 (1 << 20)
+#define PCUSB (1 << 31)
+#define PCALL (PCTIM0 | PCTIM1 | PCUART0 | PCUART1 | \
+ PCPWM0 | PCI2C0 | PCSPI0 | PCRTC | PCSPI1 | \
+ PCAD0 | PCI2C1 | PCAD1 | PCUSB)
+
+#define EINT0 1
+#define EINT1 2
+#define EINT2 4
+#define EINT3 8
+
+#define EXTWAKE0 1
+#define EXTWAKE1 2
+#define EXTWAKE2 4
+#define EXTWAKE3 8
+#define USBWAKE 0x20
+#define BODWAKE 0x4000
+#define RTCWAKE 0x8000
+
+#define EXTMODE0 1
+#define EXTMODE1 2
+#define EXTMODE2 4
+#define EXTMODE3 8
+
+#define EXTPOLAR0 1
+#define EXTPOLAR1 2
+#define EXTPOLAR2 4
+#define EXTPOLAR3 8
+
+typedef struct {
+ IOREG32 PLL_CON;
+ IOREG32 PLL_CFG;
+ IOREG32 PLL_STAT;
+ IOREG32 PLL_FEED;
+} PLL;
+
+#define PLL0Base ((PLL *)0xE01FC080)
+#define PLL1Base ((PLL *)0xE01FC0A0)
+#define PLL0CON (PLL0Base->PLL_CON)
+#define PLL0CFG (PLL0Base->PLL_CFG)
+#define PLL0STAT (PLL0Base->PLL_STAT)
+#define PLL0FEED (PLL0Base->PLL_FEED)
+#define PLL1CON (PLL1Base->PLL_CON)
+#define PLL1CFG (PLL1Base->PLL_CFG)
+#define PLL1STAT (PLL1Base->PLL_STAT)
+#define PLL1FEED (PLL1Base->PLL_FEED)
+
+/*
+ * Pins.
+ */
+typedef struct {
+ IOREG32 PS_SEL0;
+ IOREG32 PS_SEL1;
+ IOREG32 PS_SEL2;
+} PS;
+
+#define PSBase ((PS *)0xE002C000)
+#define PINSEL0 (PSBase->PS_SEL0)
+#define PINSEL1 (PSBase->PS_SEL1)
+#define PINSEL2 (PSBase->PS_SEL2)
+
+/*
+ * VIC
+ */
+#define SOURCE_WDT 0
+#define SOURCE_ARMCore0 2
+#define SOURCE_ARMCore1 3
+#define SOURCE_Timer0 4
+#define SOURCE_Timer1 5
+#define SOURCE_UART0 6
+#define SOURCE_UART1 7
+#define SOURCE_PWM0 8
+#define SOURCE_I2C0 9
+#define SOURCE_SPI0 10
+#define SOURCE_SPI1 11
+#define SOURCE_PLL 12
+#define SOURCE_RTC 13
+#define SOURCE_EINT0 14
+#define SOURCE_EINT1 15
+#define SOURCE_EINT2 16
+#define SOURCE_EINT3 17
+#define SOURCE_ADC0 18
+#define SOURCE_I2C1 19
+#define SOURCE_BOD 20
+#define SOURCE_ADC1 21
+#define SOURCE_USB 22
+
+#define INTMASK(n) (1 << (n))
+#define ALLINTMASK (INTMASK(SOURCE_WDT) | INTMASK(SOURCE_ARMCore0) | \
+ INTMASK(SOURCE_ARMCore1) | INTMASK(SOURCE_Timer0) | \
+ INTMASK(SOURCE_Timer1) | INTMASK(SOURCE_UART0) | \
+ INTMASK(SOURCE_UART1) | INTMASK(SOURCE_PWM0) | \
+ INTMASK(SOURCE_I2C0) | INTMASK(SOURCE_SPI0) | \
+ INTMASK(SOURCE_SPI1) | INTMASK(SOURCE_PLL) | \
+ INTMASK(SOURCE_RTC) | INTMASK(SOURCE_EINT0) | \
+ INTMASK(SOURCE_EINT1) | INTMASK(SOURCE_EINT2) | \
+ INTMASK(SOURCE_EINT3) | INTMASK(SOURCE_ADC0) | \
+ INTMASK(SOURCE_I2C1) | INTMASK(SOURCE_BOD) | \
+ INTMASK(SOURCE_ADC1) | INTMASK(SOURCE_USB))
+
+typedef struct {
+ IOREG32 VIC_IRQStatus;
+ IOREG32 VIC_FIQStatus;
+ IOREG32 VIC_RawIntr;
+ IOREG32 VIC_IntSelect;
+ IOREG32 VIC_IntEnable;
+ IOREG32 VIC_IntEnClear;
+ IOREG32 VIC_SoftInt;
+ IOREG32 VIC_SoftIntClear;
+ IOREG32 VIC_Protection;
+ IOREG32 unused1[3];
+ IOREG32 VIC_VectAddr;
+ IOREG32 VIC_DefVectAddr;
+ IOREG32 unused2[50];
+ IOREG32 VIC_VectAddrs[16];
+ IOREG32 unused3[48];
+ IOREG32 VIC_VectCntls[16];
+} VIC;
+
+#define VICBase ((VIC *)0xFFFFF000)
+#define VICVectorsBase ((IOREG32 *)0xFFFFF100)
+#define VICControlsBase ((IOREG32 *)0xFFFFF200)
+
+#define VICIRQStatus (VICBase->VIC_IRQStatus)
+#define VICFIQStatus (VICBase->VIC_FIQStatus)
+#define VICRawIntr (VICBase->VIC_RawIntr)
+#define VICIntSelect (VICBase->VIC_IntSelect)
+#define VICIntEnable (VICBase->VIC_IntEnable)
+#define VICIntEnClear (VICBase->VIC_IntEnClear)
+#define VICSoftInt (VICBase->VIC_SoftInt)
+#define VICSoftIntClear (VICBase->VIC_SoftIntClear)
+#define VICProtection (VICBase->VIC_Protection)
+#define VICVectAddr (VICBase->VIC_VectAddr)
+#define VICDefVectAddr (VICBase->VIC_DefVectAddr)
+
+#define VICVectAddrs(n) (VICBase->VIC_VectAddrs[n])
+#define VICVectCntls(n) (VICBase->VIC_VectCntls[n])
+
+/*
+ * MAM.
+ */
+typedef struct {
+ IOREG32 MAM_Control;
+ IOREG32 MAM_Timing;
+} MAM;
+
+#define MAMBase ((MAM *)0xE01FC000)
+#define MAMCR (MAMBase->MAM_Control)
+#define MAMTIM (MAMBase->MAM_Timing)
+
+/*
+ * GPIO - FIO.
+ */
+typedef struct {
+ IOREG32 IO_PIN;
+ IOREG32 IO_SET;
+ IOREG32 IO_DIR;
+ IOREG32 IO_CLR;
+} GPIO;
+
+#define GPIO0Base ((GPIO *)0xE0028000)
+#define IO0PIN (GPIO0Base->IO_PIN)
+#define IO0SET (GPIO0Base->IO_SET)
+#define IO0DIR (GPIO0Base->IO_DIR)
+#define IO0CLR (GPIO0Base->IO_CLR)
+
+#define GPIO1Base ((GPIO *)0xE0028010)
+#define IO1PIN (GPIO1Base->IO_PIN)
+#define IO1SET (GPIO1Base->IO_SET)
+#define IO1DIR (GPIO1Base->IO_DIR)
+#define IO1CLR (GPIO1Base->IO_CLR)
+
+typedef struct {
+ IOREG32 FIO_DIR;
+ IOREG32 unused1;
+ IOREG32 unused2;
+ IOREG32 unused3;
+ IOREG32 FIO_MASK;
+ IOREG32 FIO_PIN;
+ IOREG32 FIO_SET;
+ IOREG32 FIO_CLR;
+} FIO;
+
+#define FIO0Base ((FIO *)0x3FFFC000)
+#define FIO0DIR (FIO0Base->FIO_DIR)
+#define FIO0MASK (FIO0Base->FIO_MASK)
+#define FIO0PIN (FIO0Base->FIO_PIN)
+#define FIO0SET (FIO0Base->FIO_SET)
+#define FIO0CLR (FIO0Base->FIO_CLR)
+
+#define FIO1Base ((FIO *)0x3FFFC020)
+#define FIO1DIR (FIO1Base->FIO_DIR)
+#define FIO1MASK (FIO1Base->FIO_MASK)
+#define FIO1PIN (FIO1Base->FIO_PIN)
+#define FIO1SET (FIO1Base->FIO_SET)
+#define FIO1CLR (FIO1Base->FIO_CLR)
+
+/*
+ * UART.
+ */
+typedef struct {
+ union {
+ IOREG32 UART_RBR;
+ IOREG32 UART_THR;
+ IOREG32 UART_DLL;
+ };
+ union {
+ IOREG32 UART_IER;
+ IOREG32 UART_DLM;
+ };
+ union {
+ IOREG32 UART_IIR;
+ IOREG32 UART_FCR;
+ };
+ IOREG32 UART_LCR;
+ IOREG32 UART_MCR; // UART1 only
+ IOREG32 UART_LSR;
+ IOREG32 unused18;
+ IOREG32 UART_SCR;
+ IOREG32 UART_ACR;
+ IOREG32 unused24;
+ IOREG32 UART_FDR;
+ IOREG32 unused2C;
+ IOREG32 UART_TER;
+} UART;
+
+#define U0Base ((UART *)0xE000C000)
+#define U0RBR (U0Base->UART_RBR)
+#define U0THR (U0Base->UART_THR)
+#define U0DLL (U0Base->UART_DLL)
+#define U0IER (U0Base->UART_IER)
+#define U0DLM (U0Base->UART_DLM)
+#define U0IIR (U0Base->UART_IIR)
+#define U0FCR (U0Base->UART_FCR)
+#define U0LCR (U0Base->UART_LCR)
+#define U0LSR (U0Base->UART_LSR)
+#define U0SCR (U0Base->UART_SCR)
+#define U0ACR (U0Base->UART_ACR)
+#define U0FDR (U0Base->UART_FDR)
+#define U0TER (U0Base->UART_TER)
+
+#define U1Base ((UART *)0xE0010000)
+#define U1RBR (U1Base->UART_RBR)
+#define U1THR (U1Base->UART_THR)
+#define U1DLL (U1Base->UART_DLL)
+#define U1IER (U1Base->UART_IER)
+#define U1DLM (U1Base->UART_DLM)
+#define U1IIR (U1Base->UART_IIR)
+#define U1FCR (U1Base->UART_FCR)
+#define U1MCR (U1Base->UART_MCR)
+#define U1LCR (U1Base->UART_LCR)
+#define U1LSR (U1Base->UART_LSR)
+#define U1SCR (U1Base->UART_SCR)
+#define U1ACR (U1Base->UART_ACR)
+#define U1FDR (U1Base->UART_FDR)
+#define U1TER (U1Base->UART_TER)
+
+#define IIR_SRC_MASK 0x0F
+#define IIR_SRC_NONE 0x01
+#define IIR_SRC_TX 0x02
+#define IIR_SRC_RX 0x04
+#define IIR_SRC_ERROR 0x06
+#define IIR_SRC_TIMEOUT 0x0C
+
+#define IER_RBR 1
+#define IER_THRE 2
+#define IER_STATUS 4
+
+#define IIR_INT_PENDING 1
+
+#define LCR_WL5 0
+#define LCR_WL6 1
+#define LCR_WL7 2
+#define LCR_WL8 3
+#define LCR_STOP1 0
+#define LCR_STOP2 4
+#define LCR_NOPARITY 0
+#define LCR_PARITYODD 0x08
+#define LCR_PARITYEVEN 0x18
+#define LCR_PARITYONE 0x28
+#define LCR_PARITYZERO 0x38
+#define LCR_BREAK_ON 0x40
+#define LCR_DLAB 0x80
+
+#define FCR_ENABLE 1
+#define FCR_RXRESET 2
+#define FCR_TXRESET 4
+#define FCR_TRIGGER0 0
+#define FCR_TRIGGER1 0x40
+#define FCR_TRIGGER2 0x80
+#define FCR_TRIGGER3 0xC0
+
+#define LSR_RBR_FULL 1
+#define LSR_OVERRUN 2
+#define LSR_PARITY 4
+#define LSR_FRAMING 8
+#define LSR_BREAK 0x10
+#define LSR_THRE 0x20
+#define LSR_TEMT 0x40
+#define LSR_RXFE 0x80
+
+#define TER_ENABLE 0x80
+
+/*
+ * SSP.
+ */
+typedef struct {
+ IOREG32 SSP_CR0;
+ IOREG32 SSP_CR1;
+ IOREG32 SSP_DR;
+ IOREG32 SSP_SR;
+ IOREG32 SSP_CPSR;
+ IOREG32 SSP_IMSC;
+ IOREG32 SSP_RIS;
+ IOREG32 SSP_MIS;
+ IOREG32 SSP_ICR;
+} SSP;
+
+#define SSPBase ((SSP *)0xE0068000)
+#define SSPCR0 (SSPBase->SSP_CR0)
+#define SSPCR1 (SSPBase->SSP_CR1)
+#define SSPDR (SSPBase->SSP_DR)
+#define SSPSR (SSPBase->SSP_SR)
+#define SSPCPSR (SSPBase->SSP_CPSR)
+#define SSPIMSC (SSPBase->SSP_IMSC)
+#define SSPRIS (SSPBase->SSP_RIS)
+#define SSPMIS (SSPBase->SSP_MIS)
+#define SSPICR (SSPBase->SSP_ICR)
+
+#define CR0_DSS4BIT 3
+#define CR0_DSS5BIT 4
+#define CR0_DSS6BIT 5
+#define CR0_DSS7BIT 6
+#define CR0_DSS8BIT 7
+#define CR0_DSS9BIT 8
+#define CR0_DSS10BIT 9
+#define CR0_DSS11BIT 0xA
+#define CR0_DSS12BIT 0xB
+#define CR0_DSS13BIT 0xC
+#define CR0_DSS14BIT 0xD
+#define CR0_DSS15BIT 0xE
+#define CR0_DSS16BIT 0xF
+#define CR0_FRFSPI 0
+#define CR0_FRFSSI 0x10
+#define CR0_FRFMW 0x20
+#define CR0_CPOL 0x40
+#define CR0_CPHA 0x80
+#define CR0_CLOCKRATE(n) ((n) << 8)
+
+#define CR1_LBM 1
+#define CR1_SSE 2
+#define CR1_MS 4
+#define CR1_SOD 8
+
+#define SR_TFE 1
+#define SR_TNF 2
+#define SR_RNE 4
+#define SR_RFF 8
+#define SR_BSY 0x10
+
+#define IMSC_ROR 1
+#define IMSC_RT 2
+#define IMSC_RX 4
+#define IMSC_TX 8
+
+#define RIS_ROR 1
+#define RIS_RT 2
+#define RIS_RX 4
+#define RIS_TX 8
+
+#define MIS_ROR 1
+#define MIS_RT 2
+#define MIS_RX 4
+#define MIS_TX 8
+
+#define ICR_ROR 1
+#define ICR_RT 2
+
+/*
+ * Timers/Counters.
+ */
+typedef struct {
+ IOREG32 TC_IR;
+ IOREG32 TC_TCR;
+ IOREG32 TC_TC;
+ IOREG32 TC_PR;
+ IOREG32 TC_PC;
+ IOREG32 TC_MCR;
+ IOREG32 TC_MR0;
+ IOREG32 TC_MR1;
+ IOREG32 TC_MR2;
+ IOREG32 TC_MR3;
+ IOREG32 TC_CCR;
+ IOREG32 TC_CR0;
+ IOREG32 TC_CR1;
+ IOREG32 TC_CR2;
+ IOREG32 TC_CR3;
+ IOREG32 TC_EMR;
+ IOREG32 TC_CTCR;
+} TC;
+
+#define T0Base ((TC *)0xE0004000)
+#define T0IR (T0Base->TC_IR)
+#define T0TCR (T0Base->TC_TCR)
+#define T0TC (T0Base->TC_TC)
+#define T0PR (T0Base->TC_PR)
+#define T0PC (T0Base->TC_PC)
+#define T0MCR (T0Base->TC_MCR)
+#define T0MR0 (T0Base->TC_MR0)
+#define T0MR1 (T0Base->TC_MR1)
+#define T0MR2 (T0Base->TC_MR2)
+#define T0MR3 (T0Base->TC_MR3)
+#define T0CCR (T0Base->TC_CCR)
+#define T0CR0 (T0Base->TC_CR0)
+#define T0CR1 (T0Base->TC_CR1)
+#define T0CR2 (T0Base->TC_CR2)
+#define T0CR3 (T0Base->TC_CR3)
+#define T0EMR (T0Base->TC_EMR)
+#define T0CTCR (T0Base->TC_CTCR)
+
+#define T1Base ((TC *)0xE0008000)
+#define T1IR (T1Base->TC_IR)
+#define T1TCR (T1Base->TC_TCR)
+#define T1TC (T1Base->TC_TC)
+#define T1PR (T1Base->TC_PR)
+#define T1PC (T1Base->TC_PC)
+#define T1MCR (T1Base->TC_MCR)
+#define T1MR0 (T1Base->TC_MR0)
+#define T1MR1 (T1Base->TC_MR1)
+#define T1MR2 (T1Base->TC_MR2)
+#define T1MR3 (T1Base->TC_MR3)
+#define T1CCR (T1Base->TC_CCR)
+#define T1CR0 (T1Base->TC_CR0)
+#define T1CR1 (T1Base->TC_CR1)
+#define T1CR2 (T1Base->TC_CR2)
+#define T1CR3 (T1Base->TC_CR3)
+#define T1EMR (T1Base->TC_EMR)
+#define T1CTCR (T1Base->TC_CTCR)
+
+/*
+ * Watchdog.
+ */
+typedef struct {
+ IOREG32 WD_MOD;
+ IOREG32 WD_TC;
+ IOREG32 WD_FEED;
+ IOREG32 WD_TV;
+} WD;
+
+#define WDBase ((WD *)0xE0000000)
+#define WDMOD (WDBase->WD_MOD)
+#define WDTC (WDBase->WD_TC)
+#define WDFEED (WDBase->WD_FEED)
+#define WDTV (WDBase->WD_TV)
+
+/*
+ * DAC.
+ */
+#define DACR (*((IOREG32 *)0xE006C000))
+
+#endif /* _LPC214X_H_ */
+
diff --git a/os/hal/platforms/LPC214x/lpc214x_ssp.c b/os/hal/platforms/LPC214x/lpc214x_ssp.c new file mode 100644 index 000000000..af9915395 --- /dev/null +++ b/os/hal/platforms/LPC214x/lpc214x_ssp.c @@ -0,0 +1,133 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/lpc214x_ssp.c
+ * @brief LPC214x SSP driver code.
+ * @addtogroup LPC214x_SSP
+ * @{
+ */
+
+#include <ch.h>
+#include <pal.h>
+
+#include "lpc214x.h"
+#include "lpc214x_ssp.h"
+
+#if LPC214x_SSP_USE_MUTEX
+static Semaphore me;
+#endif
+
+/**
+ * @brief Aquires access to the SSP bus.
+ * @note This function also handles the mutual exclusion on the SSP bus if
+ * the @p LPC214x_SSP_USE_MUTEX option is enabled.
+ */
+void sspAcquireBus(void) {
+
+#if LPC214x_SSP_USE_MUTEX
+ chSemWait(&me);
+#endif
+ palClearPad(IOPORT1, 20);
+}
+
+/**
+ * @brief Releases the SSP bus.
+ * @note This function also handles the mutual exclusion on the SSP bus if
+ * the @p LPC214x_SSP_USE_MUTEX option is enabled.
+ */
+void sspReleaseBus(void) {
+
+ palClearPad(IOPORT1, 20);
+#if LPC214x_SSP_USE_MUTEX
+ chSemSignal(&me);
+#endif
+}
+
+/**
+ * @brief Synchronous SSP transfer.
+ * @param[in] in pointer to the incoming data buffer, if this parameter is set
+ * to @p NULL then the incoming data is discarded
+ * @param[out] out pointer to the outgoing data buffer, if this parameter is
+ * set to @p NULL then 0xFF bytes will be output
+ * @param[in] n the number of bytes to be transferred
+ * @note The transfer is performed in a software loop and is not interrupt
+ * driven for performance reasons, this function should be invoked
+ * by a low priority thread in order to "play nice" with the
+ * rest of the system. This kind of peripheral would really need a
+ * dedicated DMA channel.
+ */
+void sspRW(uint8_t *in, uint8_t *out, size_t n) {
+ int icnt, ocnt;
+
+ SSP *ssp = SSPBase;
+ icnt = ocnt = n;
+ while (icnt) {
+
+ if (ssp->SSP_SR & SR_RNE) {
+ if (in)
+ *in++ = ssp->SSP_DR;
+ else
+ ssp->SSP_DR;
+ icnt--;
+ continue; /* Priority over transmission. */
+ }
+
+ if (ocnt && (ssp->SSP_SR & SR_TNF)) {
+ if (out)
+ ssp->SSP_DR = *out++;
+ else
+ ssp->SSP_DR = 0xFF;
+ ocnt--;
+ }
+ }
+}
+
+/**
+ * @brief SSP setup.
+ * @param[in] cpsr the value for the @p CPSR register
+ * @param[in] cr0 the value for the @p CR0 register
+ * @param[in] cr1 the value for the @p CR1 register
+ */
+void ssp_setup(int cpsr, int cr0, int cr1) {
+
+ SSP *ssp = SSPBase;
+ ssp->SSP_CR1 = 0;
+ ssp->SSP_CR0 = cr0;
+ ssp->SSP_CPSR = cpsr;
+ ssp->SSP_CR1 = cr1 | CR1_SSE;
+}
+
+/**
+ * @brief SSP subsystem initialization.
+ */
+void ssp_init(void) {
+
+ /* Enables the SPI1 clock */
+ PCONP = (PCONP & PCALL) | PCSPI1;
+
+ /* Clock = PCLK / 2 (fastest). */
+ ssp_setup(2, CR0_DSS8BIT | CR0_FRFSPI | CR0_CLOCKRATE(0), 0);
+
+#if LPC214x_SSP_USE_MUTEX
+ chSemInit(&me, 1);
+#endif
+}
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/lpc214x_ssp.h b/os/hal/platforms/LPC214x/lpc214x_ssp.h new file mode 100644 index 000000000..3ad25b37a --- /dev/null +++ b/os/hal/platforms/LPC214x/lpc214x_ssp.h @@ -0,0 +1,54 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/lpc214x_ssp.h
+ * @brief LPC214x SSP driver macros and structures.
+ * @addtogroup LPC214x_SSP
+ * @{
+ */
+
+#ifndef _LPC214x_SSP_H_
+#define _LPC214x_SSP_H_
+
+/**
+ * @brief SSP bus mutual exclusion control.
+ * @details Configuration parameter, if set to @p TRUE enforces mutual
+ * exclusion when invoking @p sspAcquireBus() and @p sspReleaseBus().
+ * @note The internally used synchronization mechanism is a @p Semaphore.
+ */
+#if !defined(LPC214x_SSP_USE_MUTEX) || defined(__DOXYGEN__)
+#define LPC214x_SSP_USE_MUTEX TRUE
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+ void ssp_init(void);
+ void ssp_setup(int cpsr, int cr0, int cr1);
+ void sspAcquireBus(void);
+ void sspReleaseBus(void);
+ void sspRW(uint8_t *in, uint8_t *out, size_t n);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LPC214x_SSP_H_*/
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/pal_lld.c b/os/hal/platforms/LPC214x/pal_lld.c new file mode 100644 index 000000000..666afef55 --- /dev/null +++ b/os/hal/platforms/LPC214x/pal_lld.c @@ -0,0 +1,89 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/pal_lld.c
+ * @brief LPC214x FIO low level driver code
+ * @addtogroup LPC214x_PAL
+ * @{
+ */
+
+#include <ch.h>
+#include <pal.h>
+
+/**
+ * @brief LPC214x I/O ports configuration.
+ * @details FIO units and PINSEL registers initialization.
+ *
+ * @param[in] config the LPC214x ports configuration
+ */
+void _pal_lld_init(const LPC214xFIOConfig *config) {
+
+ /* Enables the access through the fast registers.*/
+ SCS = 3;
+
+ /* I/O pads initial assignment, device drivers may change this setup at a
+ * later time.*/
+ PINSEL0 = config->pinsel0;
+ PINSEL1 = config->pinsel1;
+ PINSEL2 = config->pinsel2;
+
+ /* I/O pads direction initial setting.*/
+ FIO0Base->FIO_MASK = 0;
+ FIO0Base->FIO_PIN = config->P0Data.pin;
+ FIO0Base->FIO_DIR = config->P0Data.dir;
+ FIO1Base->FIO_MASK = 0;
+ FIO1Base->FIO_PIN = config->P1Data.pin;
+ FIO1Base->FIO_DIR = config->P1Data.dir;
+}
+
+/**
+ * @brief Pads mode setup.
+ * @details This function programs a pads group belonging to the same port
+ * with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ * @note @p PAL_MODE_UNCONNECTED is implemented as push pull output with high
+ * state.
+ * @note This function does not alter the @p PINSELx registers. Alternate
+ * functions setup must be handled by device-specific code.
+ */
+void _pal_lld_setgroupmode(ioportid_t port,
+ ioportmask_t mask,
+ uint_fast8_t mode) {
+
+ switch (mode) {
+ case PAL_MODE_RESET:
+ case PAL_MODE_INPUT:
+ port->FIO_DIR &= ~mask;
+ break;
+ case PAL_MODE_UNCONNECTED:
+ port->FIO_PIN |= mask;
+ case PAL_MODE_OUTPUT_PUSHPULL:
+ port->FIO_DIR |= mask;
+ break;
+ }
+}
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/pal_lld.h b/os/hal/platforms/LPC214x/pal_lld.h new file mode 100644 index 000000000..565b3333a --- /dev/null +++ b/os/hal/platforms/LPC214x/pal_lld.h @@ -0,0 +1,253 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/pal_lld.h
+ * @brief LPC214x FIO low level driver header
+ * @addtogroup LPC214x_PAL
+ * @{
+ */
+
+#ifndef _PAL_LLD_H_
+#define _PAL_LLD_H_
+
+#include "lpc214x.h"
+
+/*===========================================================================*/
+/* Unsupported modes and specific modes */
+/*===========================================================================*/
+
+#undef PAL_MODE_INPUT_PULLUP
+#undef PAL_MODE_INPUT_PULLDOWN
+#undef PAL_MODE_OUTPUT_OPENDRAIN
+
+/*===========================================================================*/
+/* I/O Ports Types and constants. */
+/*===========================================================================*/
+
+/**
+ * @brief FIO port setup info.
+ */
+typedef struct {
+ /** Initial value for FIO_PIN register.*/
+ uint32_t pin;
+ /** Initial value for FIO_DIR register.*/
+ uint32_t dir;
+} lpc214x_fio_setup_t;
+
+/**
+ * @brief LPC214x FIO static initializer.
+ * @details An instance of this structure must be passed to @p palInit() at
+ * system startup time in order to initialized the digital I/O
+ * subsystem. This represents only the initial setup, specific pads
+ * or whole ports can be reprogrammed at later time.
+ */
+typedef struct {
+ /** @brief PINSEL0 initial value.*/
+ uint32_t pinsel0;
+ /** @brief PINSEL1 initial value.*/
+ uint32_t pinsel1;
+ /** @brief PINSEL2 initial value.*/
+ uint32_t pinsel2;
+ /** @brief Port 0 setup data.*/
+ lpc214x_fio_setup_t P0Data;
+ /** @brief Port 1 setup data.*/
+ lpc214x_fio_setup_t P1Data;
+} LPC214xFIOConfig;
+
+/**
+ * @brief Width, in bits, of an I/O port. + */
+#define PAL_IOPORTS_WIDTH 32
+
+/**
+ * @brief Digital I/O port sized unsigned type. + */
+typedef uint32_t ioportmask_t;
+
+/**
+ * @brief Port Identifier.
+ */
+typedef FIO * ioportid_t;
+
+/*===========================================================================*/
+/* I/O Ports Identifiers. */
+/*===========================================================================*/
+
+/**
+ * @brief FIO port 0 identifier.
+ */
+#define IOPORT1 FIO0Base
+
+/**
+ * @brief FIO port 1 identifier.
+ */
+#define IOPORT2 FIO1Base
+
+/*===========================================================================*/
+/* Implementation, some of the following macros could be implemented as */
+/* functions, please put them in a file named ioports_lld.c if so. */
+/*===========================================================================*/
+
+/**
+ * @brief FIO subsystem initialization.
+ * @details Enables the access through the fast registers.
+ */
+#define pal_lld_init(config) _pal_lld_init(config)
+
+/**
+ * @brief Reads an I/O port.
+ * @details This function is implemented by reading the FIO PIN register, the
+ * implementation has no side effects.
+ *
+ * @param[in] port the port identifier
+ * @return the port bits
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_readport(port) ((port)->FIO_PIN)
+
+/**
+ * @brief Reads the output latch.
+ * @details This function is implemented by reading the FIO SET register, the
+ * implementation has no side effects.
+ *
+ * @param[in] port the port identifier
+ * @return The latched logical states.
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_readlatch(port) ((port)->FIO_SET)
+
+/**
+ * @brief Writes a bits mask on a I/O port.
+ * @details This function is implemented by writing the FIO PIN register, the
+ * implementation has no side effects.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be written on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_writeport(port, bits) ((port)->FIO_PIN = (bits))
+
+/**
+ * @brief Sets a bits mask on a I/O port.
+ * @details This function is implemented by writing the FIO SET register, the
+ * implementation has no side effects.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be ORed on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_setport(port, bits) ((port)->FIO_SET = (bits))
+
+/**
+ * @brief Clears a bits mask on a I/O port.
+ * @details This function is implemented by writing the FIO CLR register, the
+ * implementation has no side effects.
+ *
+ * @param[in] port the port identifier
+ * @param[in] bits the bits to be cleared on the specified port
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_clearport(port, bits) ((port)->FIO_CLR = (bits))
+
+/**
+ * @brief Writes a value on an I/O bus.
+ * @details This function is implemented by writing the FIO PIN and MASK
+ * registers, the implementation is not atomic because the multiple
+ * accesses.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask, a logical AND is performed on the output
+ * data
+ * @param[in] offset the group bit offset within the port
+ * @param[in] bits the bits to be written. Values exceeding the group width
+ * are masked.
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_writegroup(port, mask, offset, bits) { \
+ (port)->FIO_MASK = ~((mask) << (offset)); \
+ (port)->FIO_PIN = (bits) << (offset); \
+ (port)->FIO_MASK = 0; \
+}
+
+/**
+ * @brief Pads group mode setup.
+ * @details This function programs a pads group belonging to the same port
+ * with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ * @note @p PAL_MODE_UNCONNECTED is implemented as push pull output with high
+ * state.
+ * @note This function does not alter the @p PINSELx registers. Alternate
+ * functions setup must be handled by device-specific code.
+ */
+#define pal_lld_setgroupmode(port, mask, mode) \
+ _pal_lld_setgroupmode(port, mask, mode)
+
+/**
+ * @brief Writes a logical state on an output pad.
+ *
+ * @param[in] port the port identifier
+ * @param[in] pad the pad number within the port
+ * @param[out] bit the logical value, the value must be @p 0 or @p 1
+ *
+ * @note This function is not meant to be invoked directly by the application
+ * code.
+ */
+#define pal_lld_writepad(port, pad, bit) pal_lld_writegroup(port, 1, pad, bit)
+
+/**
+ * @brief FIO port setup.
+ * @details This function programs the pins direction within a port.
+ */
+#define pal_lld_lpc214x_set_direction(port, dir) { \
+ (port)->FIO_DIR = (dir); \
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void _pal_lld_init(const LPC214xFIOConfig *config);
+ void _pal_lld_setgroupmode(ioportid_t port,
+ ioportmask_t mask,
+ uint_fast8_t mode);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PAL_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/platform.dox b/os/hal/platforms/LPC214x/platform.dox new file mode 100644 index 000000000..65bcaab31 --- /dev/null +++ b/os/hal/platforms/LPC214x/platform.dox @@ -0,0 +1,84 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup LPC214x LPC214x Support
+ * @brief LPC214x specific support.
+ * @details The LPC214x support includes:
+ * - VIC support code.
+ * - I/O ports driver.
+ * - Buffered, interrupt driven, serial driver.
+ * - SSP driver.
+ * - A MMC/SD demo driver.
+ * - A timer driven buzzer demo driver.
+ * - A minimal demo, useful as project template.
+ * - A demo supporting the kernel test suite.
+ * - A C++ demo supporting the kernel test suite.
+ * .
+ * @ingroup ARM7
+ */
+
+/**
+ * @defgroup LPC214x_VIC VIC Support
+ * @brief VIC peripheral support.
+ *
+ * @ingroup LPC214x
+ */
+
+/**
+ * @defgroup LPC214x_PAL LPC214x I/O Ports Support
+ * @brief I/O Ports peripherals support.
+ * @details This module supports the LPC214x FIO controller. The controller
+ * supports the following features (see @ref PAL):
+ * - 32 bits wide ports.
+ * - Atomic set/reset functions.
+ * - Output latched regardless of the pad setting.
+ * - Direct read of input pads regardless of the pad setting.
+ * .
+ * <h2>Supported Setup Modes</h2>
+ * - @p PAL_MODE_RESET.
+ * - @p PAL_MODE_UNCONNECTED.
+ * - @p PAL_MODE_INPUT.
+ * - @p PAL_MODE_INPUT_ANALOG (same as @p PAL_MODE_INPUT).
+ * - @p PAL_MODE_OUTPUT_PUSHPULL.
+ * .
+ * Any attempt to setup an invalid mode is ignored.
+ *
+ * <h2>Suboptimal Behavior</h2>
+ * - Pad/port toggling operations are not atomic.
+ * - Pad/group mode setup is not atomic.
+ * .
+ * @ingroup LPC214x
+ */
+
+/**
+ * @defgroup LPC214x_SERIAL LPC214x UART Support
+ * @brief UART peripherals support.
+ * @details The serial driver supports the LPC214x UART peripherals.
+ *
+ * @ingroup LPC214x
+ */
+
+/**
+ * @defgroup LPC214x_SSP LPC214x SSP Support
+ * @brief SSP peripheral support.
+ * @details This SPI driver supports the LPC214x SSP peripheral.
+ *
+ * @ingroup LPC214x
+ */
diff --git a/os/hal/platforms/LPC214x/serial_lld.c b/os/hal/platforms/LPC214x/serial_lld.c new file mode 100644 index 000000000..c7db717b2 --- /dev/null +++ b/os/hal/platforms/LPC214x/serial_lld.c @@ -0,0 +1,337 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/serial_lld.c
+ * @brief LPC214x low level serial driver code
+ * @addtogroup LPC214x_SERIAL
+ * @{
+ */
+
+#include <ch.h>
+#include <serial.h>
+
+#include "board.h"
+#include "vic.h"
+
+#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
+/** @brief UART0 serial driver identifier.*/
+SerialDriver SD1;
+#endif
+
+#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
+/** @brief UART1 serial driver identifier.*/
+SerialDriver SD2;
+#endif
+
+/** @brief Driver default configuration.*/
+static const SerialDriverConfig default_config = {
+ 38400,
+ LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
+ FCR_TRIGGER0
+};
+
+/*===========================================================================*/
+/* Low Level Driver local functions. */
+/*===========================================================================*/
+
+/**
+ * @brief UART initialization.
+ * @param[in] u pointer to an UART I/O block
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void uart_init(UART *u, const SerialDriverConfig *config) {
+
+ uint32_t div = PCLK / (config->speed << 4);
+ u->UART_LCR = config->lcr | LCR_DLAB;
+ u->UART_DLL = div;
+ u->UART_DLM = div >> 8;
+ u->UART_LCR = config->lcr;
+ u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | config->fcr;
+ u->UART_ACR = 0;
+ u->UART_FDR = 0x10;
+ u->UART_TER = TER_ENABLE;
+ u->UART_IER = IER_RBR | IER_STATUS;
+}
+
+/**
+ * @brief UART de-initialization.
+ * @param[in] u pointer to an UART I/O block
+ */
+static void uart_deinit(UART *u) {
+
+ u->UART_DLL = 1;
+ u->UART_DLM = 0;
+ u->UART_FDR = 0x10;
+ u->UART_IER = 0;
+ u->UART_FCR = FCR_RXRESET | FCR_TXRESET;
+ u->UART_LCR = 0;
+ u->UART_ACR = 0;
+ u->UART_TER = TER_ENABLE;
+}
+
+/**
+ * @brief Error handling routine.
+ * @param[in] err UART LSR register value
+ * @param[in] sdp communication channel associated to the UART
+ */
+static void set_error(IOREG32 err, SerialDriver *sdp) {
+ sdflags_t sts = 0;
+
+ if (err & LSR_OVERRUN)
+ sts |= SD_OVERRUN_ERROR;
+ if (err & LSR_PARITY)
+ sts |= SD_PARITY_ERROR;
+ if (err & LSR_FRAMING)
+ sts |= SD_FRAMING_ERROR;
+ if (err & LSR_BREAK)
+ sts |= SD_BREAK_DETECTED;
+ chSysLockFromIsr();
+ sdAddFlagsI(sdp, sts);
+ chSysUnlockFromIsr();
+}
+
+#if defined(__GNU__)
+__attribute__((noinline))
+#endif
+/**
+ * @brief Common IRQ handler.
+ * @param[in] u pointer to an UART I/O block
+ * @param[in] sdp communication channel associated to the UART
+ * @note Tries hard to clear all the pending interrupt sources, we dont want to
+ * go through the whole ISR and have another interrupt soon after.
+ */
+static void serve_interrupt(UART *u, SerialDriver *sdp) {
+
+ while (TRUE) {
+
+ switch (u->UART_IIR & IIR_SRC_MASK) {
+ case IIR_SRC_NONE:
+ return;
+ case IIR_SRC_ERROR:
+ set_error(u->UART_LSR, sdp);
+ break;
+ case IIR_SRC_TIMEOUT:
+ case IIR_SRC_RX:
+ while (u->UART_LSR & LSR_RBR_FULL) {
+ chSysLockFromIsr();
+ if (chIQPutI(&sdp->d2.iqueue, u->UART_RBR) < Q_OK)
+ sdAddFlagsI(sdp, SD_OVERRUN_ERROR);
+ chSysUnlockFromIsr();
+ }
+ chSysLockFromIsr();
+ chEvtBroadcastI(&sdp->d1.ievent);
+ chSysUnlockFromIsr();
+ break;
+ case IIR_SRC_TX:
+ {
+#if UART_FIFO_PRELOAD > 0
+ int i = UART_FIFO_PRELOAD;
+ do {
+ chSysLockFromIsr();
+ msg_t b = chOQGetI(&sdp->d2.oqueue);
+ chSysUnlockFromIsr();
+ if (b < Q_OK) {
+ u->UART_IER &= ~IER_THRE;
+ chSysLockFromIsr();
+ chEvtBroadcastI(&sdp->d1.oevent);
+ chSysUnlockFromIsr();
+ break;
+ }
+ u->UART_THR = b;
+ } while (--i);
+#else
+ chSysLockFromIsr();
+ msg_t b = sdRequestDataI(sdp);
+ chSysUnlockFromIsr();
+ if (b < Q_OK)
+ u->UART_IER &= ~IER_THRE;
+ else
+ u->UART_THR = b;
+#endif
+ }
+ default:
+ (void) u->UART_THR;
+ (void) u->UART_RBR;
+ }
+ }
+}
+
+#if UART_FIFO_PRELOAD > 0
+static void preload(UART *u, SerialDriver *sdp) {
+
+ if (u->UART_LSR & LSR_THRE) {
+ int i = UART_FIFO_PRELOAD;
+ do {
+ chSysLockFromIsr();
+ msg_t b = chOQGetI(&sdp->d2.oqueue);
+ chSysUnlockFromIsr();
+ if (b < Q_OK) {
+ chSysLockFromIsr();
+ chEvtBroadcastI(&sdp->d1.oevent);
+ chSysUnlockFromIsr();
+ return;
+ }
+ u->UART_THR = b;
+ } while (--i);
+ }
+ u->UART_IER |= IER_THRE;
+}
+#endif
+
+#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
+static void notify1(void) {
+#if UART_FIFO_PRELOAD > 0
+
+ preload(U0Base, &SD1);
+#else
+ UART *u = U0Base;
+
+ if (u->UART_LSR & LSR_THRE) {
+ chSysLockFromIsr();
+ u->UART_THR = chOQGetI(&SD1.sd_oqueue);
+ chSysUnlockFromIsr();
+ }
+ u->UART_IER |= IER_THRE;
+#endif
+}
+#endif
+
+#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
+static void notify2(void) {
+#if UART_FIFO_PRELOAD > 0
+
+ preload(U1Base, &SD2);
+#else
+ UART *u = U1Base;
+
+ if (u->UART_LSR & LSR_THRE)
+ u->UART_THR = chOQGetI(&SD2.sd_oqueue);
+ u->UART_IER |= IER_THRE;
+#endif
+}
+#endif
+
+/*===========================================================================*/
+/* Low Level Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
+CH_IRQ_HANDLER(UART0IrqHandler) {
+
+ CH_IRQ_PROLOGUE();
+
+ serve_interrupt(U0Base, &SD1);
+ VICVectAddr = 0;
+
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
+CH_IRQ_HANDLER(UART1IrqHandler) {
+
+ CH_IRQ_PROLOGUE();
+
+ serve_interrupt(U1Base, &SD2);
+ VICVectAddr = 0;
+
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+
+/*===========================================================================*/
+/* Low Level Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * Low level serial driver initialization. + */
+void sd_lld_init(void) {
+
+#if USE_LPC214x_UART0
+ sdObjectInit(&SD1, NULL, notify1);
+ SetVICVector(UART0IrqHandler, LPC214x_UART1_PRIORITY, SOURCE_UART0);
+#endif
+#if USE_LPC214x_UART1
+ sdObjectInit(&SD2, NULL, notify2);
+ SetVICVector(UART1IrqHandler, LPC214x_UART2_PRIORITY, SOURCE_UART1);
+#endif
+}
+
+/**
+ * @brief Low level serial driver configuration and (re)start.
+ *
+ * @param[in] sdp pointer to a @p SerialDriver object
+ * @param[in] config the architecture-dependent serial driver configuration.
+ * If this parameter is set to @p NULL then a default
+ * configuration is used.
+ */
+void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config) {
+
+ if (config == NULL)
+ config = &default_config;
+
+#if USE_LPC214x_UART1
+ if (&SD1 == sdp) {
+ PCONP = (PCONP & PCALL) | PCUART0;
+ uart_init(U0Base, config);
+ VICIntEnable = INTMASK(SOURCE_UART0);
+ return;
+ }
+#endif
+#if USE_LPC214x_UART2
+ if (&SD2 == sdp) {
+ PCONP = (PCONP & PCALL) | PCUART1;
+ uart_init(U1Base, config);
+ VICIntEnable = INTMASK(SOURCE_UART1);
+ return;
+ }
+#endif
+}
+
+/**
+ * @brief Low level serial driver stop.
+ * @details De-initializes the UART, stops the associated clock, resets the
+ * interrupt vector.
+ *
+ * @param[in] sdp pointer to a @p SerialDriver object
+ */
+void sd_lld_stop(SerialDriver *sdp) {
+
+#if USE_LPC214x_UART1
+ if (&SD1 == sdp) {
+ uart_deinit(U0Base);
+ PCONP = (PCONP & PCALL) & ~PCUART0;
+ VICIntEnClear = INTMASK(SOURCE_UART0);
+ return;
+ }
+#endif
+#if USE_LPC214x_UART2
+ if (&SD2 == sdp) {
+ uart_deinit(U1Base);
+ PCONP = (PCONP & PCALL) & ~PCUART1;
+ VICIntEnClear = INTMASK(SOURCE_UART1);
+ return;
+ }
+#endif
+}
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/serial_lld.h b/os/hal/platforms/LPC214x/serial_lld.h new file mode 100644 index 000000000..b6ac8e379 --- /dev/null +++ b/os/hal/platforms/LPC214x/serial_lld.h @@ -0,0 +1,174 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/serial_lld.h
+ * @brief LPC214x low level serial driver header
+ * @addtogroup LPC214x_SERIAL
+ * @{
+ */
+
+#ifndef _SERIAL_LLD_H_
+#define _SERIAL_LLD_H_
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief Serial buffers size.
+ * @details Configuration parameter, you can change the depth of the queue
+ * buffers depending on the requirements of your application.
+ * @note The default is 128 bytes for both the transmission and receive buffers.
+ */
+#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__)
+#define SERIAL_BUFFERS_SIZE 128
+#endif
+
+/**
+ * @brief FIFO preload parameter.
+ * @details Configuration parameter, this values defines how many bytes are
+ * preloaded in the HW transmit FIFO for each interrupt, the maximum value is
+ * 16 the minimum is 2, the value 0 disables the feature.
+ * @note An high value reduces the number of interrupts generated but can
+ * also increase the worst case interrupt response time because the
+ * preload loops.
+ * @note The value zero disables the feature and reverts to a simpler code
+ * that will generate an interrupt for each output byte but is much
+ * smaller and simpler.
+ */
+#if !defined(UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
+#define UART_FIFO_PRELOAD 16
+#endif
+
+/**
+ * @brief UART0 driver enable switch.
+ * @details If set to @p TRUE the support for USART1 is included.
+ * @note The default is @p TRUE .
+ */
+#if !defined(USE_LPC214x_UART0) || defined(__DOXYGEN__)
+#define USE_LPC214x_UART0 TRUE
+#endif
+
+/**
+ * @brief UART1 driver enable switch.
+ * @details If set to @p TRUE the support for USART2 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(USE_LPC214x_UART1) || defined(__DOXYGEN__)
+#define USE_LPC214x_UART1 TRUE
+#endif
+
+/**
+ * @brief UART1 interrupt priority level setting.
+ */
+#if !defined(LPC214x_UART1_PRIORITY) || defined(__DOXYGEN__)
+#define LPC214x_UART1_PRIORITY 1
+#endif
+
+/**
+ * @brief UART2 interrupt priority level setting.
+ */
+#if !defined(LPC214x_UART2_PRIORITY) || defined(__DOXYGEN__)
+#define LPC214x_UART2_PRIORITY 2
+#endif
+
+/*===========================================================================*/
+/* Unsupported event flags and custom events. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * Serial Driver condition flags type.
+ */
+typedef uint32_t sdflags_t;
+
+/**
+ * @brief @p SerialDriver specific data.
+ */
+struct _serial_driver_data {
+ /**
+ * Input queue, incoming data can be read from this input queue by
+ * using the queues APIs.
+ */
+ InputQueue iqueue;
+ /**
+ * Output queue, outgoing data can be written to this output queue by
+ * using the queues APIs.
+ */
+ OutputQueue oqueue;
+ /**
+ * Status Change @p EventSource. This event is generated when one or more
+ * condition flags change.
+ */
+ EventSource sevent;
+ /**
+ * I/O driver status flags.
+ */
+ sdflags_t flags;
+ /**
+ * Input circular buffer. + */
+ uint8_t ib[SERIAL_BUFFERS_SIZE];
+ /**
+ * Output circular buffer. + */
+ uint8_t ob[SERIAL_BUFFERS_SIZE];
+};
+
+/**
+ * @brief LPC214x Serial Driver configuration structure.
+ * @details An instance of this structure must be passed to @p sdStart()
+ * in order to configure and start a serial driver operations.
+ */
+typedef struct {
+ uint32_t speed;
+ uint32_t lcr;
+ uint32_t fcr;
+} SerialDriverConfig;
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+/** @cond never*/
+#if USE_LPC214x_UART0
+extern SerialDriver SD1;
+#endif
+#if USE_LPC214x_UART1
+extern SerialDriver SD2;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void sd_lld_init(void);
+ void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config);
+ void sd_lld_stop(SerialDriver *sdp);
+#ifdef __cplusplus
+}
+#endif
+/** @endcond*/
+
+#endif /* _SERIAL_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/vic.c b/os/hal/platforms/LPC214x/vic.c new file mode 100644 index 000000000..685830063 --- /dev/null +++ b/os/hal/platforms/LPC214x/vic.c @@ -0,0 +1,63 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/vic.c
+ * @brief LPC214x VIC peripheral support code.
+ * @addtogroup LPC214x_VIC
+ * @{
+ */
+
+#include <ch.h>
+
+#include "lpc214x.h"
+
+/**
+ * @brief VIC Initialization.
+ * @note Better reset everything in the VIC, it is a HUGE source of trouble.
+ */
+void vic_init(void) {
+ int i;
+
+ VIC *vic = VICBase;
+ vic->VIC_IntSelect = 0; /* All sources assigned to IRQ. */
+ vic->VIC_SoftIntClear = ALLINTMASK; /* No interrupts enforced */
+ vic->VIC_IntEnClear = ALLINTMASK; /* All sources disabled. */
+ for (i = 0; i < 16; i++) {
+ vic->VIC_VectCntls[i] = 0;
+ vic->VIC_VectAddrs[i] = 0;
+ vic->VIC_VectAddr = 0;
+ }
+}
+
+/**
+ * @brief Initializes a VIC vector.
+ * @details Set a vector for an interrupt source and enables it.
+ * @param[in] handler the pointer to the IRQ service routine
+ * @param[in] vector the vector number
+ * @param[in] source the IRQ source to be associated to the vector
+ */
+void SetVICVector(void *handler, int vector, int source) {
+
+ VIC *vicp = VICBase;
+ vicp->VIC_VectAddrs[vector] = (IOREG32)handler;
+ vicp->VIC_VectCntls[vector] = (IOREG32)(source | 0x20);
+}
+
+/** @} */
diff --git a/os/hal/platforms/LPC214x/vic.h b/os/hal/platforms/LPC214x/vic.h new file mode 100644 index 000000000..486a80b56 --- /dev/null +++ b/os/hal/platforms/LPC214x/vic.h @@ -0,0 +1,41 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file LPC214x/vic.h
+ * @brief LPC214x VIC peripheral support code.
+ * @addtogroup LPC214x_VIC
+ * @{
+ */
+
+#ifndef _VIC_H_
+#define _VIC_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void vic_init(void);
+ void SetVICVector(void *handler, int vector, int source);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VIC_H_ */
+
+/** @} */
|