diff options
Diffstat (limited to 'tinyusb/hw/bsp/ea4357/ea4357.c')
| -rwxr-xr-x | tinyusb/hw/bsp/ea4357/ea4357.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/ea4357/ea4357.c b/tinyusb/hw/bsp/ea4357/ea4357.c new file mode 100755 index 00000000..aa206a28 --- /dev/null +++ b/tinyusb/hw/bsp/ea4357/ea4357.c @@ -0,0 +1,291 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#include "chip.h" +#include "../board.h" +#include "pca9532.h" + +#define UART_DEV LPC_USART0 +#define UART_PORT 0x0f +#define UART_PIN_TX 10 +#define UART_PIN_RX 11 + +// P9_1 joystick down +#define BUTTON_PORT 4 +#define BUTTON_PIN 13 + +//static const struct { +// uint8_t mux_port; +// uint8_t mux_pin; +// +// uint8_t gpio_port; +// uint8_t gpio_pin; +//}buttons[] = +//{ +// {0x0a, 3, 4, 10 }, // Joystick up +// {0x09, 1, 4, 13 }, // Joystick down +// {0x0a, 2, 4, 9 }, // Joystick left +// {0x09, 0, 4, 12 }, // Joystick right +// {0x0a, 1, 4, 8 }, // Joystick press +// {0x02, 7, 0, 7 }, // SW6 +//}; + +/*------------------------------------------------------------------*/ +/* BOARD API + *------------------------------------------------------------------*/ + +/* System configuration variables used by chip driver */ +const uint32_t OscRateIn = 12000000; +const uint32_t ExtRateIn = 0; + +static const PINMUX_GRP_T pinmuxing[] = +{ + // Button ( Joystick down ) + {0x9, 1, (SCU_MODE_INBUFF_EN | SCU_MODE_INACT | SCU_MODE_FUNC0 | SCU_MODE_PULLUP)}, + + // UART + {UART_PORT, UART_PIN_TX, SCU_MODE_PULLDOWN | SCU_MODE_FUNC1}, + {UART_PORT, UART_PIN_RX, SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC1}, + + // USB +}; + +/* Pin clock mux values, re-used structure, value in first index is meaningless */ +static const PINMUX_GRP_T pinclockmuxing[] = +{ + {0, 0, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)}, + {0, 1, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)}, + {0, 2, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)}, + {0, 3, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)}, +}; + +// Invoked by startup code +void SystemInit(void) +{ +#ifdef __USE_LPCOPEN + extern void (* const g_pfnVectors[])(void); + unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08; + *pSCB_VTOR = (unsigned int) g_pfnVectors; + +#if __FPU_USED == 1 + fpuInit(); +#endif +#endif // __USE_LPCOPEN + + /* Setup system level pin muxing */ + Chip_SCU_SetPinMuxing(pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T)); + + /* Clock pins only, group field not used */ + for (int i = 0; i <(int) (sizeof(pinclockmuxing) / sizeof(pinclockmuxing[0])); i++) + { + Chip_SCU_ClockPinMuxSet(pinclockmuxing[i].pinnum, pinclockmuxing[i].modefunc); + } + + Chip_SetupXtalClocking(); +} + +void board_init(void) +{ + SystemCoreClockUpdate(); + +#if CFG_TUSB_OS == OPT_OS_NONE + // 1ms tick timer + SysTick_Config(SystemCoreClock / 1000); +#elif CFG_TUSB_OS == OPT_OS_FREERTOS + // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher ) + //NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY ); +#endif + + Chip_GPIO_Init(LPC_GPIO_PORT); + + // LED via pca9532 I2C + Chip_SCU_I2C0PinConfig(I2C0_STANDARD_FAST_MODE); + Chip_I2C_Init(I2C0); + Chip_I2C_SetClockRate(I2C0, 100000); + Chip_I2C_SetMasterEventHandler(I2C0, Chip_I2C_EventHandlerPolling); + + pca9532_init(); + + // Button + Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN); + + //------------- UART -------------// + Chip_UART_Init(UART_DEV); + Chip_UART_SetBaud(UART_DEV, CFG_BOARD_UART_BAUDRATE); + Chip_UART_ConfigData(UART_DEV, UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS); + Chip_UART_TXEnable(UART_DEV); + + //------------- USB -------------// + enum { + USBMODE_DEVICE = 2, + USBMODE_HOST = 3 + }; + + enum { + USBMODE_VBUS_LOW = 0, + USBMODE_VBUS_HIGH = 1 + }; + + /* From EA4357 user manual + * + * USB0 Device operation: + * - Insert jumpers in position 1-2 in JP17/JP18/JP19. + * - GPIO28 controls USB connect functionality + * - LED32 lights when the USB Device is connected. SJ4 has pads 1-2 shorted by default. + * - LED33 is controlled by GPIO27 and signals USB-up state. GPIO54 is used for VBUS + * sensing. + * + * USB0 Host operation: + * - insert jumpers in position 2-3 in JP17/JP18/JP19. + * - USB Host power is controlled via distribution switch U20 (found in schematic page 11). + * - Signal GPIO26 is active low and enables +5V on VBUS2. + * - LED35 light whenever +5V is present on VBUS2. + * - GPIO55 is connected to status feedback from the distribution switch. + * - GPIO54 is used for VBUS sensing. 15Kohm pull-down resistors are always active + * + * Note: + * - Insert jumpers in position 2-3 in JP17/JP18/JP19 + * - Insert jumpers in JP31 (OTG) + */ +#if CFG_TUSB_RHPORT0_MODE + Chip_USB0_Init(); +#endif + + /* From EA4357 user manual + * + * For USB1 Device: + * - a 1.5Kohm pull-up resistor is needed on the USB DP data signal. There are two methods to create this. + * JP15 is inserted and the pull-up resistor is always enabled. Alternatively, the pull-up resistor is activated + * inside the USB OTG chip (U31), and this has to be done via the I2C interface of GPIO52/GPIO53. In the latter case, + * JP15 shall not be inserted. + * - J19 is the connector to use when USB Device is used. Normally it should be a USB-B connector for + * creating a USB Device interface, but the mini-AB connector can also be used in this case. The status + * of VBUS can be read via U31. + * - JP16 shall not be inserted. + * + * For USB1 Host: + * - 15Kohm pull-down resistors are needed on the USB data signals. These are activated inside the USB OTG chip (U31), + * and this has to be done via the I2C interface of GPIO52/GPIO53. + * - J20 is the connector to use when USB Host is used. In order to provide +5V to the external USB + * device connected to this connector (J20), channel A of U20 must be enabled. It is enabled by default + * since SJ5 is normally connected between pin 1-2. + * - LED34 lights green when +5V is available on J20. + * - JP15 shall not be inserted. JP16 has no effect + */ +#if CFG_TUSB_RHPORT1_MODE + Chip_USB1_Init(); +#endif + + // USB0 Vbus Power: P2_3 on EA4357 channel B U20 GPIO26 active low (base board) + Chip_SCU_PinMuxSet(2, 3, SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC7); + + #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE + // P9_5 (GPIO5[18]) (GPIO28 on oem base) as USB connect, active low. + Chip_SCU_PinMuxSet(9, 5, SCU_MODE_PULLDOWN | SCU_MODE_FUNC4); + Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 18); + #endif + + // USB1 Power: EA4357 channel A U20 is enabled by SJ5 connected to pad 1-2, no more action required + // TODO Remove R170, R171, solder a pair of 15K to USB1 D+/D- to test with USB1 Host +} + +//--------------------------------------------------------------------+ +// USB Interrupt Handler +//--------------------------------------------------------------------+ +void USB0_IRQHandler(void) +{ + #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST + tuh_int_handler(0); + #endif + + #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE + tud_int_handler(0); + #endif +} + +void USB1_IRQHandler(void) +{ + #if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST + tuh_int_handler(1); + #endif + + #if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE + tud_int_handler(1); + #endif +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + if (state) + { + pca9532_setLeds( LED1, 0 ); + }else + { + pca9532_setLeds( 0, LED1); + } +} + +uint32_t board_button_read(void) +{ + // active low + return Chip_GPIO_GetPinState(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN) ? 0 : 1; +} + +int board_uart_read(uint8_t* buf, int len) +{ + //return UART_ReceiveByte(BOARD_UART_DEV); + (void) buf; (void) len; + return 0; +} + +int board_uart_write(void const * buf, int len) +{ + uint8_t const* buf8 = (uint8_t const*) buf; + for(int i=0; i<len; i++) + { + while ((Chip_UART_ReadLineStatus(UART_DEV) & UART_LSR_THRE) == 0) {} + Chip_UART_SendByte(UART_DEV, buf8[i]); + } + + return len; +} + +#if CFG_TUSB_OS == OPT_OS_NONE +volatile uint32_t system_ticks = 0; +void SysTick_Handler (void) +{ + system_ticks++; +} + +uint32_t board_millis(void) +{ + return system_ticks; +} +#endif |