diff options
Diffstat (limited to 'ports/ARMCM3-STM32F103/stm32_serial.c')
| -rw-r--r-- | ports/ARMCM3-STM32F103/stm32_serial.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/ports/ARMCM3-STM32F103/stm32_serial.c b/ports/ARMCM3-STM32F103/stm32_serial.c deleted file mode 100644 index 4634d82a8..000000000 --- a/ports/ARMCM3-STM32F103/stm32_serial.c +++ /dev/null @@ -1,222 +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/ARMCM3-STM32F103/stm32_serial.c - * @brief STM32F103 Serial driver code. - * @addtogroup STM32F103_SERIAL - * @{ - */ - -#include <ch.h> - -#include "board.h" -#include "nvic.h" -#include "stm32_serial.h" - -#if USE_STM32_USART1 || defined(__DOXYGEN__) -/** @brief USART1 serial driver identifier.*/ -FullDuplexDriver COM1; - -static uint8_t ib1[SERIAL_BUFFERS_SIZE]; -static uint8_t ob1[SERIAL_BUFFERS_SIZE]; -#endif - -#if USE_STM32_USART2 || defined(__DOXYGEN__) -/** @brief USART2 serial driver identifier.*/ -FullDuplexDriver COM2; - -static uint8_t ib2[SERIAL_BUFFERS_SIZE]; -static uint8_t ob2[SERIAL_BUFFERS_SIZE]; -#endif - -#if USE_STM32_USART3 || defined(__DOXYGEN__) -/** @brief USART3 serial driver identifier.*/ -FullDuplexDriver COM3; - -static uint8_t ib3[SERIAL_BUFFERS_SIZE]; -static uint8_t ob3[SERIAL_BUFFERS_SIZE]; -#endif - -/** - * @brief Error handling routine. - * @param[in] sr USART SR register value - * @param[in] com communication channel associated to the USART - */ -static void SetError(uint16_t sr, FullDuplexDriver *com) { - dflags_t sts = 0; - - if (sr & USART_SR_ORE) - sts |= SD_OVERRUN_ERROR; - if (sr & USART_SR_PE) - sts |= SD_PARITY_ERROR; - if (sr & USART_SR_FE) - sts |= SD_FRAMING_ERROR; - if (sr & USART_SR_LBD) - sts |= SD_BREAK_DETECTED; - chSysLockFromIsr(); - chFDDAddFlagsI(com, sts); - chSysUnlockFromIsr(); -} - -/** - * @brief Common IRQ handler. - * @param[in] u pointer to an USART I/O block - * @param[in] com communication channel associated to the USART - */ -static void ServeInterrupt(USART_TypeDef *u, FullDuplexDriver *com) { - uint16_t sr = u->SR; - - if (sr & (USART_SR_ORE | USART_SR_FE | USART_SR_PE | USART_SR_LBD)) - SetError(sr, com); - if (sr & USART_SR_RXNE) { - chSysLockFromIsr(); - chFDDIncomingDataI(com, u->DR); - chSysUnlockFromIsr(); - } - if (sr & USART_SR_TXE) { - chSysLockFromIsr(); - msg_t b = chFDDRequestDataI(com); - chSysUnlockFromIsr(); - if (b < Q_OK) - u->CR1 &= ~USART_CR1_TXEIE; - else - u->DR = b; - } -} - -#if USE_STM32_USART1 || defined(__DOXYGEN__) -CH_IRQ_HANDLER(VectorD4) { - - CH_IRQ_PROLOGUE(); - - ServeInterrupt(USART1, &COM1); - - CH_IRQ_EPILOGUE(); -} - -static void OutNotify1(void) { - - USART1->CR1 |= USART_CR1_TXEIE; -} -#endif - -#if USE_STM32_USART2 || defined(__DOXYGEN__) -CH_IRQ_HANDLER(VectorD8) { - - CH_IRQ_PROLOGUE(); - - ServeInterrupt(USART2, &COM2); - - CH_IRQ_EPILOGUE(); -} - -static void OutNotify2(void) { - - USART2->CR1 |= USART_CR1_TXEIE; -} -#endif - -#if USE_STM32_USART3 || defined(__DOXYGEN__) -CH_IRQ_HANDLER(VectorDC) { - - CH_IRQ_PROLOGUE(); - - ServeInterrupt(USART3, &COM3); - - CH_IRQ_EPILOGUE(); -} - -static void OutNotify3(void) { - - USART3->CR1 |= USART_CR1_TXEIE; -} -#endif - -/** - * @brief USART1 setup. - * @details This function must be invoked with interrupts disabled. - * @param[in] u pointer to an USART I/O block - * @param[in] speed serial port speed in bits per second - * @param[in] cr1 the value for the @p CR1 register - * @param[in] cr2 the value for the @p CR2 register - * @param[in] cr3 the value for the @p CR3 register - * @note Must be invoked with interrupts disabled. - * @note Does not reset the I/O queues. - */ -void usart_setup(USART_TypeDef *u, uint32_t speed, uint16_t cr1, - uint16_t cr2, uint16_t cr3) { - - /* - * Baud rate setting. - */ - if (u == USART1) - u->BRR = APB2CLK / speed; - else - u->BRR = APB1CLK / speed; - - /* - * Note that some bits are enforced. - */ - u->CR1 = cr1 | USART_CR1_UE | USART_CR1_PEIE | USART_CR1_RXNEIE | - USART_CR1_TE | USART_CR1_RE; - u->CR2 = cr2; - u->CR3 = cr3 | USART_CR3_EIE; -} - -/** - * @brief Serial driver initialization. - * @param[in] prio1 priority to be assigned to the USART1 IRQ - * @param[in] prio2 priority to be assigned to the USART2 IRQ - * @param[in] prio3 priority to be assigned to the USART3 IRQ - * @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(uint32_t prio1, uint32_t prio2, uint32_t prio3) { - -#if USE_STM32_USART1 - chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1); - RCC->APB2ENR |= RCC_APB2ENR_USART1EN; - usart_setup(USART1, DEFAULT_USART_BITRATE, 0, - USART_CR2_STOP1_BITS | USART_CR2_LINEN, 0); - GPIOA->CRH = (GPIOA->CRH & 0xFFFFF00F) | 0x000004B0; - NVICEnableVector(USART1_IRQn, prio1); -#endif - -#if USE_STM32_USART2 - chFDDInit(&COM2, ib2, sizeof ib2, NULL, ob2, sizeof ob2, OutNotify2); - RCC->APB1ENR |= RCC_APB1ENR_USART2EN; - usart_setup(USART2, DEFAULT_USART_BITRATE, 0, - USART_CR2_STOP1_BITS | USART_CR2_LINEN, 0); - GPIOA->CRL = (GPIOA->CRL & 0xFFFF00FF) | 0x00004B00; - NVICEnableVector(USART2_IRQn, prio2); -#endif - -#if USE_STM32_USART3 - chFDDInit(&COM3, ib3, sizeof ib3, NULL, ob3, sizeof ob3, OutNotify3); - RCC->APB1ENR |= RCC_APB1ENR_USART3EN; - usart_setup(USART3, DEFAULT_USART_BITRATE, 0, - USART_CR2_STOP1_BITS | USART_CR2_LINEN, 0); - GPIOB->CRH = (GPIOB->CRH & 0xFFFF00FF) | 0x00004B00; - NVICEnableVector(USART3_IRQn, prio3); -#endif -} - -/** @} */ |