diff options
Diffstat (limited to 'ports/ARM7-LPC214x/lpc214x_serial.c')
| -rw-r--r-- | ports/ARM7-LPC214x/lpc214x_serial.c | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/ports/ARM7-LPC214x/lpc214x_serial.c b/ports/ARM7-LPC214x/lpc214x_serial.c deleted file mode 100644 index e452cec8d..000000000 --- a/ports/ARM7-LPC214x/lpc214x_serial.c +++ /dev/null @@ -1,268 +0,0 @@ -/*
- 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 ports/ARM7-LPC214x/lpc214x_serial.c
- * @brief LPC214x Serial driver code.
- * @addtogroup LPC214x_SERIAL
- * @{
- */
-
-#include <ch.h>
-
-#include "lpc214x.h"
-#include "vic.h"
-#include "lpc214x_serial.h"
-#include "board.h"
-
-#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
-/** @brief UART0 serial driver identifier.*/
-FullDuplexDriver COM1;
-
-static uint8_t ib1[SERIAL_BUFFERS_SIZE];
-static uint8_t ob1[SERIAL_BUFFERS_SIZE];
-#endif
-
-#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
-/** @brief UART1 serial driver identifier.*/
-FullDuplexDriver COM2;
-
-static uint8_t ib2[SERIAL_BUFFERS_SIZE];
-static uint8_t ob2[SERIAL_BUFFERS_SIZE];
-#endif
-
-/**
- * @brief Error handling routine.
- * @param[in] err UART LSR register value
- * @param[in] com communication channel associated to the USART
- */
-static void SetError(IOREG32 err, FullDuplexDriver *com) {
- dflags_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();
- chFDDAddFlagsI(com, sts);
- chSysUnlockFromIsr();
-}
-
-/** @cond never*/
-__attribute__((noinline))
-/** @endcond*/
-/**
- * @brief Common IRQ handler.
- * @param[in] u pointer to an UART I/O block
- * @param[in] com 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 ServeInterrupt(UART *u, FullDuplexDriver *com) {
-
- while (TRUE) {
-
- switch (u->UART_IIR & IIR_SRC_MASK) {
- case IIR_SRC_NONE:
- return;
- case IIR_SRC_ERROR:
- SetError(u->UART_LSR, com);
- break;
- case IIR_SRC_TIMEOUT:
- case IIR_SRC_RX:
- while (u->UART_LSR & LSR_RBR_FULL) {
- chSysLockFromIsr();
- if (chIQPutI(&com->d2.iqueue, u->UART_RBR) < Q_OK)
- chFDDAddFlagsI(com, SD_OVERRUN_ERROR);
- chSysUnlockFromIsr();
- }
- chSysLockFromIsr();
- chEvtBroadcastI(&com->d1.ievent);
- chSysUnlockFromIsr();
- break;
- case IIR_SRC_TX:
- {
-#if UART_FIFO_PRELOAD > 0
- int i = UART_FIFO_PRELOAD;
- do {
- chSysLockFromIsr();
- msg_t b = chOQGetI(&com->d2.oqueue);
- chSysUnlockFromIsr();
- if (b < Q_OK) {
- u->UART_IER &= ~IER_THRE;
- chSysLockFromIsr();
- chEvtBroadcastI(&com->d1.oevent);
- chSysUnlockFromIsr();
- break;
- }
- u->UART_THR = b;
- } while (--i);
-#else
- chSysLockFromIsr();
- msg_t b = chFDDRequestDataI(com);
- chSysUnlockFromIsr();
- if (b < Q_OK)
- u->UART_IER &= ~IER_THRE;
- else
- u->UART_THR = b;
-#endif
- }
- default:
- u->UART_THR;
- u->UART_RBR;
- }
- }
-}
-
-#if UART_FIFO_PRELOAD > 0
-static void preload(UART *u, FullDuplexDriver *com) {
-
- if (u->UART_LSR & LSR_THRE) {
- int i = UART_FIFO_PRELOAD;
- do {
- chSysLockFromIsr();
- msg_t b = chOQGetI(&com->d2.oqueue);
- chSysUnlockFromIsr();
- if (b < Q_OK) {
- chSysLockFromIsr();
- chEvtBroadcastI(&com->d1.oevent);
- chSysUnlockFromIsr();
- return;
- }
- u->UART_THR = b;
- } while (--i);
- }
- u->UART_IER |= IER_THRE;
-}
-#endif
-
-#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
-CH_IRQ_HANDLER(UART0IrqHandler) {
-
- CH_IRQ_PROLOGUE();
-
- ServeInterrupt(U0Base, &COM1);
- VICVectAddr = 0;
-
- CH_IRQ_EPILOGUE();
-}
-
-static void OutNotify1(void) {
-#if UART_FIFO_PRELOAD > 0
-
- preload(U0Base, &COM1);
-#else
- UART *u = U0Base;
-
- if (u->UART_LSR & LSR_THRE) {
- chSysLockFromIsr();
- u->UART_THR = chOQGetI(&COM1.sd_oqueue);
- chSysUnlockFromIsr();
- }
- u->UART_IER |= IER_THRE;
-#endif
-}
-#endif
-
-#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
-CH_IRQ_HANDLER(UART1IrqHandler) {
-
- CH_IRQ_PROLOGUE();
-
- ServeInterrupt(U1Base, &COM2);
- VICVectAddr = 0;
-
- CH_IRQ_EPILOGUE();
-}
-
-static void OutNotify2(void) {
-#if UART_FIFO_PRELOAD > 0
-
- preload(U1Base, &COM2);
-#else
- UART *u = U1Base;
-
- if (u->UART_LSR & LSR_THRE)
- u->UART_THR = chOQGetI(&COM2.sd_oqueue);
- u->UART_IER |= IER_THRE;
-#endif
-}
-#endif
-
-/**
- * @brief UART setup.
- * @param[in] u pointer to an UART I/O block
- * @param[in] speed serial port speed in bits per second
- * @param[in] lcr the value for the @p LCR register
- * @param[in] fcr the value for the @p FCR register
- * @note Must be invoked with interrupts disabled.
- * @note Does not reset the I/O queues.
- */
-void uart_setup(UART *u, int speed, int lcr, int fcr) {
-
- int div = PCLK / (speed << 4);
- u->UART_LCR = lcr | LCR_DLAB;
- u->UART_DLL = div;
- u->UART_DLM = div >> 8;
- u->UART_LCR = lcr;
- u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | fcr;
- u->UART_ACR = 0;
- u->UART_FDR = 0x10;
- u->UART_TER = TER_ENABLE;
- u->UART_IER = IER_RBR | IER_STATUS;
-}
-
-/**
- * @brief Serial driver initialization.
- * @param[in] vector1 IRC vector to be used for UART0
- * @param[in] vector2 IRC vector to be used for UART1
- * @note Handshake pads are not enabled inside this function because they
- * may have another use, enable them externally if needed.
- * RX and TX pads are handled inside.
- */
-void serial_init(int vector1, int vector2) {
-
-#if USE_LPC214x_UART0
- SetVICVector(UART0IrqHandler, vector1, SOURCE_UART0);
- PCONP = (PCONP & PCALL) | PCUART0;
- chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1);
- uart_setup(U0Base,
- DEFAULT_UART_BITRATE,
- LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
- FCR_TRIGGER0);
- VICIntEnable = INTMASK(SOURCE_UART0);
-#endif
-
-#if USE_LPC214x_UART1
- SetVICVector(UART1IrqHandler, vector2, SOURCE_UART1);
- PCONP = (PCONP & PCALL) | PCUART1;
- chFDDInit(&COM2, ib2, sizeof ib2, NULL, ob2, sizeof ob2, OutNotify2);
- uart_setup(U1Base,
- DEFAULT_UART_BITRATE,
- LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
- FCR_TRIGGER0);
- VICIntEnable = INTMASK(SOURCE_UART0) | INTMASK(SOURCE_UART1);
-#endif
-}
-
-/** @} */
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