Gordon Craig
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targets/TARGET_STM/TARGET_STM32F1/serial_device.c@174:ed647f63e28d, 2017-12-19 (annotated)
- Committer:
- Dollyparton
- Date:
- Tue Dec 19 12:50:13 2017 +0000
- Revision:
- 174:ed647f63e28d
- Parent:
- 170:19eb464bc2be
Added RAW socket.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| AnnaBridge | 167:e84263d55307 | 1 | /* mbed Microcontroller Library |
| AnnaBridge | 167:e84263d55307 | 2 | ******************************************************************************* |
| AnnaBridge | 167:e84263d55307 | 3 | * Copyright (c) 2014, STMicroelectronics |
| AnnaBridge | 167:e84263d55307 | 4 | * All rights reserved. |
| AnnaBridge | 167:e84263d55307 | 5 | * |
| AnnaBridge | 167:e84263d55307 | 6 | * Redistribution and use in source and binary forms, with or without |
| AnnaBridge | 167:e84263d55307 | 7 | * modification, are permitted provided that the following conditions are met: |
| AnnaBridge | 167:e84263d55307 | 8 | * |
| AnnaBridge | 167:e84263d55307 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
| AnnaBridge | 167:e84263d55307 | 10 | * this list of conditions and the following disclaimer. |
| AnnaBridge | 167:e84263d55307 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| AnnaBridge | 167:e84263d55307 | 12 | * this list of conditions and the following disclaimer in the documentation |
| AnnaBridge | 167:e84263d55307 | 13 | * and/or other materials provided with the distribution. |
| AnnaBridge | 167:e84263d55307 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| AnnaBridge | 167:e84263d55307 | 15 | * may be used to endorse or promote products derived from this software |
| AnnaBridge | 167:e84263d55307 | 16 | * without specific prior written permission. |
| AnnaBridge | 167:e84263d55307 | 17 | * |
| AnnaBridge | 167:e84263d55307 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AnnaBridge | 167:e84263d55307 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| AnnaBridge | 167:e84263d55307 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| AnnaBridge | 167:e84263d55307 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| AnnaBridge | 167:e84263d55307 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| AnnaBridge | 167:e84263d55307 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| AnnaBridge | 167:e84263d55307 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| AnnaBridge | 167:e84263d55307 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| AnnaBridge | 167:e84263d55307 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| AnnaBridge | 167:e84263d55307 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| AnnaBridge | 167:e84263d55307 | 28 | ******************************************************************************* |
| AnnaBridge | 167:e84263d55307 | 29 | */ |
| AnnaBridge | 167:e84263d55307 | 30 | #include "mbed_assert.h" |
| AnnaBridge | 167:e84263d55307 | 31 | #include "serial_api.h" |
| AnnaBridge | 167:e84263d55307 | 32 | #include "serial_api_hal.h" |
| AnnaBridge | 167:e84263d55307 | 33 | |
| AnnaBridge | 167:e84263d55307 | 34 | #if DEVICE_SERIAL |
| AnnaBridge | 167:e84263d55307 | 35 | |
| AnnaBridge | 167:e84263d55307 | 36 | #include "cmsis.h" |
| AnnaBridge | 167:e84263d55307 | 37 | #include "pinmap.h" |
| AnnaBridge | 167:e84263d55307 | 38 | #include "mbed_error.h" |
| AnnaBridge | 167:e84263d55307 | 39 | #include <string.h> |
| AnnaBridge | 167:e84263d55307 | 40 | #include "PeripheralPins.h" |
| AnnaBridge | 167:e84263d55307 | 41 | |
| AnnaBridge | 167:e84263d55307 | 42 | #define UART_NUM (3) |
| AnnaBridge | 167:e84263d55307 | 43 | |
| AnnaBridge | 167:e84263d55307 | 44 | static uint32_t serial_irq_ids[UART_NUM] = {0}; |
| AnnaBridge | 167:e84263d55307 | 45 | UART_HandleTypeDef uart_handlers[UART_NUM]; |
| AnnaBridge | 167:e84263d55307 | 46 | |
| AnnaBridge | 167:e84263d55307 | 47 | static uart_irq_handler irq_handler; |
| AnnaBridge | 167:e84263d55307 | 48 | |
| AnnaBridge | 167:e84263d55307 | 49 | int stdio_uart_inited = 0; |
| AnnaBridge | 167:e84263d55307 | 50 | serial_t stdio_uart; |
| AnnaBridge | 167:e84263d55307 | 51 | |
| AnnaBridge | 167:e84263d55307 | 52 | void serial_init(serial_t *obj, PinName tx, PinName rx) |
| AnnaBridge | 167:e84263d55307 | 53 | { |
| AnnaBridge | 167:e84263d55307 | 54 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 55 | |
| AnnaBridge | 167:e84263d55307 | 56 | // Determine the UART to use (UART_1, UART_2, ...) |
| AnnaBridge | 167:e84263d55307 | 57 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
| AnnaBridge | 167:e84263d55307 | 58 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
| AnnaBridge | 167:e84263d55307 | 59 | |
| AnnaBridge | 167:e84263d55307 | 60 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
| AnnaBridge | 167:e84263d55307 | 61 | obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
| AnnaBridge | 167:e84263d55307 | 62 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 63 | |
| AnnaBridge | 167:e84263d55307 | 64 | // Enable USART clock |
| AnnaBridge | 167:e84263d55307 | 65 | if (obj_s->uart == UART_1) { |
| AnnaBridge | 167:e84263d55307 | 66 | __HAL_RCC_USART1_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 67 | __HAL_RCC_USART1_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 68 | __HAL_RCC_USART1_CLK_ENABLE(); |
| AnnaBridge | 167:e84263d55307 | 69 | obj_s->index = 0; |
| AnnaBridge | 167:e84263d55307 | 70 | } |
| AnnaBridge | 167:e84263d55307 | 71 | if (obj_s->uart == UART_2) { |
| AnnaBridge | 167:e84263d55307 | 72 | __HAL_RCC_USART2_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 73 | __HAL_RCC_USART2_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 74 | __HAL_RCC_USART2_CLK_ENABLE(); |
| AnnaBridge | 167:e84263d55307 | 75 | obj_s->index = 1; |
| AnnaBridge | 167:e84263d55307 | 76 | } |
| AnnaBridge | 167:e84263d55307 | 77 | if (obj_s->uart == UART_3) { |
| AnnaBridge | 167:e84263d55307 | 78 | __HAL_RCC_USART3_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 79 | __HAL_RCC_USART3_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 80 | __HAL_RCC_USART3_CLK_ENABLE(); |
| AnnaBridge | 167:e84263d55307 | 81 | obj_s->index = 2; |
| AnnaBridge | 167:e84263d55307 | 82 | } |
| AnnaBridge | 167:e84263d55307 | 83 | |
| AnnaBridge | 167:e84263d55307 | 84 | // Configure UART pins |
| AnnaBridge | 167:e84263d55307 | 85 | pinmap_pinout(tx, PinMap_UART_TX); |
| AnnaBridge | 167:e84263d55307 | 86 | pinmap_pinout(rx, PinMap_UART_RX); |
| AnnaBridge | 167:e84263d55307 | 87 | |
| AnnaBridge | 167:e84263d55307 | 88 | if (tx != NC) { |
| AnnaBridge | 167:e84263d55307 | 89 | pin_mode(tx, PullUp); |
| AnnaBridge | 167:e84263d55307 | 90 | } |
| AnnaBridge | 167:e84263d55307 | 91 | if (rx != NC) { |
| AnnaBridge | 167:e84263d55307 | 92 | pin_mode(rx, PullUp); |
| AnnaBridge | 167:e84263d55307 | 93 | } |
| AnnaBridge | 167:e84263d55307 | 94 | |
| AnnaBridge | 167:e84263d55307 | 95 | // Configure UART |
| AnnaBridge | 167:e84263d55307 | 96 | obj_s->baudrate = 9600; |
| AnnaBridge | 167:e84263d55307 | 97 | obj_s->databits = UART_WORDLENGTH_8B; |
| AnnaBridge | 167:e84263d55307 | 98 | obj_s->stopbits = UART_STOPBITS_1; |
| AnnaBridge | 167:e84263d55307 | 99 | obj_s->parity = UART_PARITY_NONE; |
| AnnaBridge | 167:e84263d55307 | 100 | |
| AnnaBridge | 167:e84263d55307 | 101 | #if DEVICE_SERIAL_FC |
| AnnaBridge | 167:e84263d55307 | 102 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
| AnnaBridge | 167:e84263d55307 | 103 | #endif |
| AnnaBridge | 167:e84263d55307 | 104 | |
| AnnaBridge | 167:e84263d55307 | 105 | obj_s->pin_tx = tx; |
| AnnaBridge | 167:e84263d55307 | 106 | obj_s->pin_rx = rx; |
| AnnaBridge | 167:e84263d55307 | 107 | |
| AnnaBridge | 167:e84263d55307 | 108 | init_uart(obj); |
| AnnaBridge | 167:e84263d55307 | 109 | |
| AnnaBridge | 167:e84263d55307 | 110 | // For stdio management |
| AnnaBridge | 167:e84263d55307 | 111 | if (obj_s->uart == STDIO_UART) { |
| AnnaBridge | 167:e84263d55307 | 112 | stdio_uart_inited = 1; |
| AnnaBridge | 167:e84263d55307 | 113 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
| AnnaBridge | 167:e84263d55307 | 114 | } |
| AnnaBridge | 167:e84263d55307 | 115 | } |
| AnnaBridge | 167:e84263d55307 | 116 | |
| AnnaBridge | 167:e84263d55307 | 117 | void serial_free(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 118 | { |
| AnnaBridge | 167:e84263d55307 | 119 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 120 | |
| AnnaBridge | 167:e84263d55307 | 121 | // Reset UART and disable clock |
| AnnaBridge | 167:e84263d55307 | 122 | if (obj_s->uart == UART_1) { |
| AnnaBridge | 167:e84263d55307 | 123 | __HAL_RCC_USART1_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 124 | __HAL_RCC_USART1_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 125 | __HAL_RCC_USART1_CLK_DISABLE(); |
| AnnaBridge | 167:e84263d55307 | 126 | } |
| AnnaBridge | 167:e84263d55307 | 127 | if (obj_s->uart == UART_2) { |
| AnnaBridge | 167:e84263d55307 | 128 | __HAL_RCC_USART2_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 129 | __HAL_RCC_USART2_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 130 | __HAL_RCC_USART2_CLK_DISABLE(); |
| AnnaBridge | 167:e84263d55307 | 131 | } |
| AnnaBridge | 167:e84263d55307 | 132 | if (obj_s->uart == UART_3) { |
| AnnaBridge | 167:e84263d55307 | 133 | __HAL_RCC_USART3_FORCE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 134 | __HAL_RCC_USART3_RELEASE_RESET(); |
| AnnaBridge | 167:e84263d55307 | 135 | __HAL_RCC_USART3_CLK_DISABLE(); |
| AnnaBridge | 167:e84263d55307 | 136 | } |
| AnnaBridge | 167:e84263d55307 | 137 | |
| AnnaBridge | 167:e84263d55307 | 138 | // Configure GPIOs |
| AnnaBridge | 167:e84263d55307 | 139 | pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
| AnnaBridge | 167:e84263d55307 | 140 | pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
| AnnaBridge | 167:e84263d55307 | 141 | |
| AnnaBridge | 167:e84263d55307 | 142 | serial_irq_ids[obj_s->index] = 0; |
| AnnaBridge | 167:e84263d55307 | 143 | } |
| AnnaBridge | 167:e84263d55307 | 144 | |
| AnnaBridge | 167:e84263d55307 | 145 | void serial_baud(serial_t *obj, int baudrate) |
| AnnaBridge | 167:e84263d55307 | 146 | { |
| AnnaBridge | 167:e84263d55307 | 147 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 148 | |
| AnnaBridge | 167:e84263d55307 | 149 | obj_s->baudrate = baudrate; |
| AnnaBridge | 167:e84263d55307 | 150 | init_uart(obj); |
| AnnaBridge | 167:e84263d55307 | 151 | } |
| AnnaBridge | 167:e84263d55307 | 152 | |
| AnnaBridge | 167:e84263d55307 | 153 | /****************************************************************************** |
| AnnaBridge | 167:e84263d55307 | 154 | * INTERRUPTS HANDLING |
| AnnaBridge | 167:e84263d55307 | 155 | ******************************************************************************/ |
| AnnaBridge | 167:e84263d55307 | 156 | |
| AnnaBridge | 167:e84263d55307 | 157 | static void uart_irq(int id) |
| AnnaBridge | 167:e84263d55307 | 158 | { |
| AnnaBridge | 167:e84263d55307 | 159 | UART_HandleTypeDef * huart = &uart_handlers[id]; |
| AnnaBridge | 167:e84263d55307 | 160 | |
| AnnaBridge | 167:e84263d55307 | 161 | if (serial_irq_ids[id] != 0) { |
| Kojto | 170:19eb464bc2be | 162 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) { |
| Kojto | 170:19eb464bc2be | 163 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 164 | irq_handler(serial_irq_ids[id], TxIrq); |
| AnnaBridge | 167:e84263d55307 | 165 | } |
| AnnaBridge | 167:e84263d55307 | 166 | } |
| AnnaBridge | 167:e84263d55307 | 167 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 168 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 169 | irq_handler(serial_irq_ids[id], RxIrq); |
| Kojto | 170:19eb464bc2be | 170 | /* Flag has been cleared when reading the content */ |
| AnnaBridge | 167:e84263d55307 | 171 | } |
| AnnaBridge | 167:e84263d55307 | 172 | } |
| AnnaBridge | 167:e84263d55307 | 173 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 174 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 175 | volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag |
| AnnaBridge | 167:e84263d55307 | 176 | } |
| AnnaBridge | 167:e84263d55307 | 177 | } |
| AnnaBridge | 167:e84263d55307 | 178 | } |
| AnnaBridge | 167:e84263d55307 | 179 | } |
| AnnaBridge | 167:e84263d55307 | 180 | |
| AnnaBridge | 167:e84263d55307 | 181 | static void uart1_irq(void) |
| AnnaBridge | 167:e84263d55307 | 182 | { |
| AnnaBridge | 167:e84263d55307 | 183 | uart_irq(0); |
| AnnaBridge | 167:e84263d55307 | 184 | } |
| AnnaBridge | 167:e84263d55307 | 185 | |
| AnnaBridge | 167:e84263d55307 | 186 | static void uart2_irq(void) |
| AnnaBridge | 167:e84263d55307 | 187 | { |
| AnnaBridge | 167:e84263d55307 | 188 | uart_irq(1); |
| AnnaBridge | 167:e84263d55307 | 189 | } |
| AnnaBridge | 167:e84263d55307 | 190 | |
| AnnaBridge | 167:e84263d55307 | 191 | static void uart3_irq(void) |
| AnnaBridge | 167:e84263d55307 | 192 | { |
| AnnaBridge | 167:e84263d55307 | 193 | uart_irq(2); |
| AnnaBridge | 167:e84263d55307 | 194 | } |
| AnnaBridge | 167:e84263d55307 | 195 | |
| AnnaBridge | 167:e84263d55307 | 196 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) |
| AnnaBridge | 167:e84263d55307 | 197 | { |
| AnnaBridge | 167:e84263d55307 | 198 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 199 | |
| AnnaBridge | 167:e84263d55307 | 200 | irq_handler = handler; |
| AnnaBridge | 167:e84263d55307 | 201 | serial_irq_ids[obj_s->index] = id; |
| AnnaBridge | 167:e84263d55307 | 202 | } |
| AnnaBridge | 167:e84263d55307 | 203 | |
| AnnaBridge | 167:e84263d55307 | 204 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) |
| AnnaBridge | 167:e84263d55307 | 205 | { |
| AnnaBridge | 167:e84263d55307 | 206 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 207 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 208 | IRQn_Type irq_n = (IRQn_Type)0; |
| AnnaBridge | 167:e84263d55307 | 209 | uint32_t vector = 0; |
| AnnaBridge | 167:e84263d55307 | 210 | |
| AnnaBridge | 167:e84263d55307 | 211 | if (obj_s->uart == UART_1) { |
| AnnaBridge | 167:e84263d55307 | 212 | irq_n = USART1_IRQn; |
| AnnaBridge | 167:e84263d55307 | 213 | vector = (uint32_t)&uart1_irq; |
| AnnaBridge | 167:e84263d55307 | 214 | } |
| AnnaBridge | 167:e84263d55307 | 215 | |
| AnnaBridge | 167:e84263d55307 | 216 | if (obj_s->uart == UART_2) { |
| AnnaBridge | 167:e84263d55307 | 217 | irq_n = USART2_IRQn; |
| AnnaBridge | 167:e84263d55307 | 218 | vector = (uint32_t)&uart2_irq; |
| AnnaBridge | 167:e84263d55307 | 219 | } |
| AnnaBridge | 167:e84263d55307 | 220 | |
| AnnaBridge | 167:e84263d55307 | 221 | if (obj_s->uart == UART_3) { |
| AnnaBridge | 167:e84263d55307 | 222 | irq_n = USART3_IRQn; |
| AnnaBridge | 167:e84263d55307 | 223 | vector = (uint32_t)&uart3_irq; |
| AnnaBridge | 167:e84263d55307 | 224 | } |
| AnnaBridge | 167:e84263d55307 | 225 | |
| AnnaBridge | 167:e84263d55307 | 226 | if (enable) { |
| AnnaBridge | 167:e84263d55307 | 227 | if (irq == RxIrq) { |
| AnnaBridge | 167:e84263d55307 | 228 | __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE); |
| AnnaBridge | 167:e84263d55307 | 229 | } else { // TxIrq |
| Kojto | 170:19eb464bc2be | 230 | __HAL_UART_ENABLE_IT(huart, UART_IT_TXE); |
| AnnaBridge | 167:e84263d55307 | 231 | } |
| AnnaBridge | 167:e84263d55307 | 232 | NVIC_SetVector(irq_n, vector); |
| AnnaBridge | 167:e84263d55307 | 233 | NVIC_EnableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 234 | |
| AnnaBridge | 167:e84263d55307 | 235 | } else { // disable |
| AnnaBridge | 167:e84263d55307 | 236 | int all_disabled = 0; |
| AnnaBridge | 167:e84263d55307 | 237 | if (irq == RxIrq) { |
| AnnaBridge | 167:e84263d55307 | 238 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
| AnnaBridge | 167:e84263d55307 | 239 | // Check if TxIrq is disabled too |
| AnnaBridge | 167:e84263d55307 | 240 | if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) { |
| AnnaBridge | 167:e84263d55307 | 241 | all_disabled = 1; |
| AnnaBridge | 167:e84263d55307 | 242 | } |
| AnnaBridge | 167:e84263d55307 | 243 | } else { // TxIrq |
| Kojto | 170:19eb464bc2be | 244 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
| AnnaBridge | 167:e84263d55307 | 245 | // Check if RxIrq is disabled too |
| AnnaBridge | 167:e84263d55307 | 246 | if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) { |
| AnnaBridge | 167:e84263d55307 | 247 | all_disabled = 1; |
| AnnaBridge | 167:e84263d55307 | 248 | } |
| AnnaBridge | 167:e84263d55307 | 249 | } |
| AnnaBridge | 167:e84263d55307 | 250 | |
| AnnaBridge | 167:e84263d55307 | 251 | if (all_disabled) { |
| AnnaBridge | 167:e84263d55307 | 252 | NVIC_DisableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 253 | } |
| AnnaBridge | 167:e84263d55307 | 254 | } |
| AnnaBridge | 167:e84263d55307 | 255 | } |
| AnnaBridge | 167:e84263d55307 | 256 | |
| AnnaBridge | 167:e84263d55307 | 257 | /****************************************************************************** |
| AnnaBridge | 167:e84263d55307 | 258 | * READ/WRITE |
| AnnaBridge | 167:e84263d55307 | 259 | ******************************************************************************/ |
| AnnaBridge | 167:e84263d55307 | 260 | |
| AnnaBridge | 167:e84263d55307 | 261 | int serial_getc(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 262 | { |
| AnnaBridge | 167:e84263d55307 | 263 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 264 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 265 | |
| AnnaBridge | 167:e84263d55307 | 266 | while (!serial_readable(obj)); |
| AnnaBridge | 167:e84263d55307 | 267 | if (obj_s->databits == UART_WORDLENGTH_8B) { |
| AnnaBridge | 167:e84263d55307 | 268 | return (int)(huart->Instance->DR & (uint8_t)0xFF); |
| AnnaBridge | 167:e84263d55307 | 269 | } else { |
| AnnaBridge | 167:e84263d55307 | 270 | return (int)(huart->Instance->DR & (uint16_t)0x1FF); |
| AnnaBridge | 167:e84263d55307 | 271 | } |
| AnnaBridge | 167:e84263d55307 | 272 | } |
| AnnaBridge | 167:e84263d55307 | 273 | |
| AnnaBridge | 167:e84263d55307 | 274 | void serial_putc(serial_t *obj, int c) |
| AnnaBridge | 167:e84263d55307 | 275 | { |
| AnnaBridge | 167:e84263d55307 | 276 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 277 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 278 | |
| AnnaBridge | 167:e84263d55307 | 279 | while (!serial_writable(obj)); |
| AnnaBridge | 167:e84263d55307 | 280 | if (obj_s->databits == UART_WORDLENGTH_8B) { |
| AnnaBridge | 167:e84263d55307 | 281 | huart->Instance->DR = (uint8_t)(c & (uint8_t)0xFF); |
| AnnaBridge | 167:e84263d55307 | 282 | } else { |
| AnnaBridge | 167:e84263d55307 | 283 | huart->Instance->DR = (uint16_t)(c & (uint16_t)0x1FF); |
| AnnaBridge | 167:e84263d55307 | 284 | } |
| AnnaBridge | 167:e84263d55307 | 285 | } |
| AnnaBridge | 167:e84263d55307 | 286 | |
| AnnaBridge | 167:e84263d55307 | 287 | void serial_clear(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 288 | { |
| AnnaBridge | 167:e84263d55307 | 289 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 290 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 291 | |
| AnnaBridge | 167:e84263d55307 | 292 | huart->TxXferCount = 0; |
| AnnaBridge | 167:e84263d55307 | 293 | huart->RxXferCount = 0; |
| AnnaBridge | 167:e84263d55307 | 294 | } |
| AnnaBridge | 167:e84263d55307 | 295 | |
| AnnaBridge | 167:e84263d55307 | 296 | void serial_break_set(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 297 | { |
| AnnaBridge | 167:e84263d55307 | 298 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 299 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 300 | |
| AnnaBridge | 167:e84263d55307 | 301 | HAL_LIN_SendBreak(huart); |
| AnnaBridge | 167:e84263d55307 | 302 | } |
| AnnaBridge | 167:e84263d55307 | 303 | |
| AnnaBridge | 167:e84263d55307 | 304 | #if DEVICE_SERIAL_ASYNCH |
| AnnaBridge | 167:e84263d55307 | 305 | |
| AnnaBridge | 167:e84263d55307 | 306 | /****************************************************************************** |
| AnnaBridge | 167:e84263d55307 | 307 | * LOCAL HELPER FUNCTIONS |
| AnnaBridge | 167:e84263d55307 | 308 | ******************************************************************************/ |
| AnnaBridge | 167:e84263d55307 | 309 | |
| AnnaBridge | 167:e84263d55307 | 310 | /** |
| AnnaBridge | 167:e84263d55307 | 311 | * Configure the TX buffer for an asynchronous write serial transaction |
| AnnaBridge | 167:e84263d55307 | 312 | * |
| AnnaBridge | 167:e84263d55307 | 313 | * @param obj The serial object. |
| AnnaBridge | 167:e84263d55307 | 314 | * @param tx The buffer for sending. |
| AnnaBridge | 167:e84263d55307 | 315 | * @param tx_length The number of words to transmit. |
| AnnaBridge | 167:e84263d55307 | 316 | */ |
| AnnaBridge | 167:e84263d55307 | 317 | static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width) |
| AnnaBridge | 167:e84263d55307 | 318 | { |
| AnnaBridge | 167:e84263d55307 | 319 | (void)width; |
| AnnaBridge | 167:e84263d55307 | 320 | |
| AnnaBridge | 167:e84263d55307 | 321 | // Exit if a transmit is already on-going |
| AnnaBridge | 167:e84263d55307 | 322 | if (serial_tx_active(obj)) { |
| AnnaBridge | 167:e84263d55307 | 323 | return; |
| AnnaBridge | 167:e84263d55307 | 324 | } |
| AnnaBridge | 167:e84263d55307 | 325 | |
| AnnaBridge | 167:e84263d55307 | 326 | obj->tx_buff.buffer = tx; |
| AnnaBridge | 167:e84263d55307 | 327 | obj->tx_buff.length = tx_length; |
| AnnaBridge | 167:e84263d55307 | 328 | obj->tx_buff.pos = 0; |
| AnnaBridge | 167:e84263d55307 | 329 | } |
| AnnaBridge | 167:e84263d55307 | 330 | |
| AnnaBridge | 167:e84263d55307 | 331 | /** |
| AnnaBridge | 167:e84263d55307 | 332 | * Configure the RX buffer for an asynchronous write serial transaction |
| AnnaBridge | 167:e84263d55307 | 333 | * |
| AnnaBridge | 167:e84263d55307 | 334 | * @param obj The serial object. |
| AnnaBridge | 167:e84263d55307 | 335 | * @param tx The buffer for sending. |
| AnnaBridge | 167:e84263d55307 | 336 | * @param tx_length The number of words to transmit. |
| AnnaBridge | 167:e84263d55307 | 337 | */ |
| AnnaBridge | 167:e84263d55307 | 338 | static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width) |
| AnnaBridge | 167:e84263d55307 | 339 | { |
| AnnaBridge | 167:e84263d55307 | 340 | (void)width; |
| AnnaBridge | 167:e84263d55307 | 341 | |
| AnnaBridge | 167:e84263d55307 | 342 | // Exit if a reception is already on-going |
| AnnaBridge | 167:e84263d55307 | 343 | if (serial_rx_active(obj)) { |
| AnnaBridge | 167:e84263d55307 | 344 | return; |
| AnnaBridge | 167:e84263d55307 | 345 | } |
| AnnaBridge | 167:e84263d55307 | 346 | |
| AnnaBridge | 167:e84263d55307 | 347 | obj->rx_buff.buffer = rx; |
| AnnaBridge | 167:e84263d55307 | 348 | obj->rx_buff.length = rx_length; |
| AnnaBridge | 167:e84263d55307 | 349 | obj->rx_buff.pos = 0; |
| AnnaBridge | 167:e84263d55307 | 350 | } |
| AnnaBridge | 167:e84263d55307 | 351 | |
| AnnaBridge | 167:e84263d55307 | 352 | /** |
| AnnaBridge | 167:e84263d55307 | 353 | * Configure events |
| AnnaBridge | 167:e84263d55307 | 354 | * |
| AnnaBridge | 167:e84263d55307 | 355 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 356 | * @param event The logical OR of the events to configure |
| AnnaBridge | 167:e84263d55307 | 357 | * @param enable Set to non-zero to enable events, or zero to disable them |
| AnnaBridge | 167:e84263d55307 | 358 | */ |
| AnnaBridge | 167:e84263d55307 | 359 | static void serial_enable_event(serial_t *obj, int event, uint8_t enable) |
| AnnaBridge | 167:e84263d55307 | 360 | { |
| AnnaBridge | 167:e84263d55307 | 361 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 362 | |
| AnnaBridge | 167:e84263d55307 | 363 | // Shouldn't have to enable interrupt here, just need to keep track of the requested events. |
| AnnaBridge | 167:e84263d55307 | 364 | if (enable) { |
| AnnaBridge | 167:e84263d55307 | 365 | obj_s->events |= event; |
| AnnaBridge | 167:e84263d55307 | 366 | } else { |
| AnnaBridge | 167:e84263d55307 | 367 | obj_s->events &= ~event; |
| AnnaBridge | 167:e84263d55307 | 368 | } |
| AnnaBridge | 167:e84263d55307 | 369 | } |
| AnnaBridge | 167:e84263d55307 | 370 | |
| AnnaBridge | 167:e84263d55307 | 371 | |
| AnnaBridge | 167:e84263d55307 | 372 | /** |
| AnnaBridge | 167:e84263d55307 | 373 | * Get index of serial object TX IRQ, relating it to the physical peripheral. |
| AnnaBridge | 167:e84263d55307 | 374 | * |
| AnnaBridge | 167:e84263d55307 | 375 | * @param obj pointer to serial object |
| AnnaBridge | 167:e84263d55307 | 376 | * @return internal NVIC TX IRQ index of U(S)ART peripheral |
| AnnaBridge | 167:e84263d55307 | 377 | */ |
| AnnaBridge | 167:e84263d55307 | 378 | static IRQn_Type serial_get_irq_n(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 379 | { |
| AnnaBridge | 167:e84263d55307 | 380 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 381 | IRQn_Type irq_n; |
| AnnaBridge | 167:e84263d55307 | 382 | |
| AnnaBridge | 167:e84263d55307 | 383 | switch (obj_s->index) { |
| AnnaBridge | 167:e84263d55307 | 384 | case 0: |
| AnnaBridge | 167:e84263d55307 | 385 | irq_n = USART1_IRQn; |
| AnnaBridge | 167:e84263d55307 | 386 | break; |
| AnnaBridge | 167:e84263d55307 | 387 | |
| AnnaBridge | 167:e84263d55307 | 388 | case 1: |
| AnnaBridge | 167:e84263d55307 | 389 | irq_n = USART2_IRQn; |
| AnnaBridge | 167:e84263d55307 | 390 | break; |
| AnnaBridge | 167:e84263d55307 | 391 | |
| AnnaBridge | 167:e84263d55307 | 392 | case 2: |
| AnnaBridge | 167:e84263d55307 | 393 | irq_n = USART3_IRQn; |
| AnnaBridge | 167:e84263d55307 | 394 | break; |
| AnnaBridge | 167:e84263d55307 | 395 | |
| AnnaBridge | 167:e84263d55307 | 396 | default: |
| AnnaBridge | 167:e84263d55307 | 397 | irq_n = (IRQn_Type)0; |
| AnnaBridge | 167:e84263d55307 | 398 | } |
| AnnaBridge | 167:e84263d55307 | 399 | |
| AnnaBridge | 167:e84263d55307 | 400 | return irq_n; |
| AnnaBridge | 167:e84263d55307 | 401 | } |
| AnnaBridge | 167:e84263d55307 | 402 | |
| AnnaBridge | 167:e84263d55307 | 403 | /****************************************************************************** |
| AnnaBridge | 167:e84263d55307 | 404 | * MBED API FUNCTIONS |
| AnnaBridge | 167:e84263d55307 | 405 | ******************************************************************************/ |
| AnnaBridge | 167:e84263d55307 | 406 | |
| AnnaBridge | 167:e84263d55307 | 407 | /** |
| AnnaBridge | 167:e84263d55307 | 408 | * Begin asynchronous TX transfer. The used buffer is specified in the serial |
| AnnaBridge | 167:e84263d55307 | 409 | * object, tx_buff |
| AnnaBridge | 167:e84263d55307 | 410 | * |
| AnnaBridge | 167:e84263d55307 | 411 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 412 | * @param tx The buffer for sending |
| AnnaBridge | 167:e84263d55307 | 413 | * @param tx_length The number of words to transmit |
| AnnaBridge | 167:e84263d55307 | 414 | * @param tx_width The bit width of buffer word |
| AnnaBridge | 167:e84263d55307 | 415 | * @param handler The serial handler |
| AnnaBridge | 167:e84263d55307 | 416 | * @param event The logical OR of events to be registered |
| AnnaBridge | 167:e84263d55307 | 417 | * @param hint A suggestion for how to use DMA with this transfer |
| AnnaBridge | 167:e84263d55307 | 418 | * @return Returns number of data transfered, or 0 otherwise |
| AnnaBridge | 167:e84263d55307 | 419 | */ |
| AnnaBridge | 167:e84263d55307 | 420 | int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx_width, uint32_t handler, uint32_t event, DMAUsage hint) |
| AnnaBridge | 167:e84263d55307 | 421 | { |
| AnnaBridge | 167:e84263d55307 | 422 | // TODO: DMA usage is currently ignored |
| AnnaBridge | 167:e84263d55307 | 423 | (void) hint; |
| AnnaBridge | 167:e84263d55307 | 424 | |
| AnnaBridge | 167:e84263d55307 | 425 | // Check buffer is ok |
| AnnaBridge | 167:e84263d55307 | 426 | MBED_ASSERT(tx != (void*)0); |
| AnnaBridge | 167:e84263d55307 | 427 | MBED_ASSERT(tx_width == 8); // support only 8b width |
| AnnaBridge | 167:e84263d55307 | 428 | |
| AnnaBridge | 167:e84263d55307 | 429 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 430 | UART_HandleTypeDef * huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 431 | |
| AnnaBridge | 167:e84263d55307 | 432 | if (tx_length == 0) { |
| AnnaBridge | 167:e84263d55307 | 433 | return 0; |
| AnnaBridge | 167:e84263d55307 | 434 | } |
| AnnaBridge | 167:e84263d55307 | 435 | |
| AnnaBridge | 167:e84263d55307 | 436 | // Set up buffer |
| AnnaBridge | 167:e84263d55307 | 437 | serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width); |
| AnnaBridge | 167:e84263d55307 | 438 | |
| AnnaBridge | 167:e84263d55307 | 439 | // Set up events |
| AnnaBridge | 167:e84263d55307 | 440 | serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events |
| AnnaBridge | 167:e84263d55307 | 441 | serial_enable_event(obj, event, 1); // Set only the wanted events |
| AnnaBridge | 167:e84263d55307 | 442 | |
| AnnaBridge | 167:e84263d55307 | 443 | // Enable interrupt |
| AnnaBridge | 167:e84263d55307 | 444 | IRQn_Type irq_n = serial_get_irq_n(obj); |
| AnnaBridge | 167:e84263d55307 | 445 | NVIC_ClearPendingIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 446 | NVIC_DisableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 447 | NVIC_SetPriority(irq_n, 1); |
| AnnaBridge | 167:e84263d55307 | 448 | NVIC_SetVector(irq_n, (uint32_t)handler); |
| AnnaBridge | 167:e84263d55307 | 449 | NVIC_EnableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 450 | |
| AnnaBridge | 167:e84263d55307 | 451 | // the following function will enable UART_IT_TXE and error interrupts |
| AnnaBridge | 167:e84263d55307 | 452 | if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) { |
| AnnaBridge | 167:e84263d55307 | 453 | return 0; |
| AnnaBridge | 167:e84263d55307 | 454 | } |
| AnnaBridge | 167:e84263d55307 | 455 | |
| AnnaBridge | 167:e84263d55307 | 456 | return tx_length; |
| AnnaBridge | 167:e84263d55307 | 457 | } |
| AnnaBridge | 167:e84263d55307 | 458 | |
| AnnaBridge | 167:e84263d55307 | 459 | /** |
| AnnaBridge | 167:e84263d55307 | 460 | * Begin asynchronous RX transfer (enable interrupt for data collecting) |
| AnnaBridge | 167:e84263d55307 | 461 | * The used buffer is specified in the serial object, rx_buff |
| AnnaBridge | 167:e84263d55307 | 462 | * |
| AnnaBridge | 167:e84263d55307 | 463 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 464 | * @param rx The buffer for sending |
| AnnaBridge | 167:e84263d55307 | 465 | * @param rx_length The number of words to transmit |
| AnnaBridge | 167:e84263d55307 | 466 | * @param rx_width The bit width of buffer word |
| AnnaBridge | 167:e84263d55307 | 467 | * @param handler The serial handler |
| AnnaBridge | 167:e84263d55307 | 468 | * @param event The logical OR of events to be registered |
| AnnaBridge | 167:e84263d55307 | 469 | * @param handler The serial handler |
| AnnaBridge | 167:e84263d55307 | 470 | * @param char_match A character in range 0-254 to be matched |
| AnnaBridge | 167:e84263d55307 | 471 | * @param hint A suggestion for how to use DMA with this transfer |
| AnnaBridge | 167:e84263d55307 | 472 | */ |
| AnnaBridge | 167:e84263d55307 | 473 | void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_width, uint32_t handler, uint32_t event, uint8_t char_match, DMAUsage hint) |
| AnnaBridge | 167:e84263d55307 | 474 | { |
| AnnaBridge | 167:e84263d55307 | 475 | // TODO: DMA usage is currently ignored |
| AnnaBridge | 167:e84263d55307 | 476 | (void) hint; |
| AnnaBridge | 167:e84263d55307 | 477 | |
| AnnaBridge | 167:e84263d55307 | 478 | /* Sanity check arguments */ |
| AnnaBridge | 167:e84263d55307 | 479 | MBED_ASSERT(obj); |
| AnnaBridge | 167:e84263d55307 | 480 | MBED_ASSERT(rx != (void*)0); |
| AnnaBridge | 167:e84263d55307 | 481 | MBED_ASSERT(rx_width == 8); // support only 8b width |
| AnnaBridge | 167:e84263d55307 | 482 | |
| AnnaBridge | 167:e84263d55307 | 483 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 484 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 485 | |
| AnnaBridge | 167:e84263d55307 | 486 | serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0); |
| AnnaBridge | 167:e84263d55307 | 487 | serial_enable_event(obj, event, 1); |
| AnnaBridge | 167:e84263d55307 | 488 | |
| AnnaBridge | 167:e84263d55307 | 489 | // set CharMatch |
| AnnaBridge | 167:e84263d55307 | 490 | obj->char_match = char_match; |
| AnnaBridge | 167:e84263d55307 | 491 | |
| AnnaBridge | 167:e84263d55307 | 492 | serial_rx_buffer_set(obj, rx, rx_length, rx_width); |
| AnnaBridge | 167:e84263d55307 | 493 | |
| AnnaBridge | 167:e84263d55307 | 494 | IRQn_Type irq_n = serial_get_irq_n(obj); |
| AnnaBridge | 167:e84263d55307 | 495 | NVIC_ClearPendingIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 496 | NVIC_DisableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 497 | NVIC_SetPriority(irq_n, 0); |
| AnnaBridge | 167:e84263d55307 | 498 | NVIC_SetVector(irq_n, (uint32_t)handler); |
| AnnaBridge | 167:e84263d55307 | 499 | NVIC_EnableIRQ(irq_n); |
| AnnaBridge | 167:e84263d55307 | 500 | |
| AnnaBridge | 167:e84263d55307 | 501 | // following HAL function will enable the RXNE interrupt + error interrupts |
| AnnaBridge | 167:e84263d55307 | 502 | HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length); |
| AnnaBridge | 167:e84263d55307 | 503 | } |
| AnnaBridge | 167:e84263d55307 | 504 | |
| AnnaBridge | 167:e84263d55307 | 505 | /** |
| AnnaBridge | 167:e84263d55307 | 506 | * Attempts to determine if the serial peripheral is already in use for TX |
| AnnaBridge | 167:e84263d55307 | 507 | * |
| AnnaBridge | 167:e84263d55307 | 508 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 509 | * @return Non-zero if the TX transaction is ongoing, 0 otherwise |
| AnnaBridge | 167:e84263d55307 | 510 | */ |
| AnnaBridge | 167:e84263d55307 | 511 | uint8_t serial_tx_active(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 512 | { |
| AnnaBridge | 167:e84263d55307 | 513 | MBED_ASSERT(obj); |
| AnnaBridge | 167:e84263d55307 | 514 | |
| AnnaBridge | 167:e84263d55307 | 515 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 516 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 517 | |
| AnnaBridge | 167:e84263d55307 | 518 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0); |
| AnnaBridge | 167:e84263d55307 | 519 | } |
| AnnaBridge | 167:e84263d55307 | 520 | |
| AnnaBridge | 167:e84263d55307 | 521 | /** |
| AnnaBridge | 167:e84263d55307 | 522 | * Attempts to determine if the serial peripheral is already in use for RX |
| AnnaBridge | 167:e84263d55307 | 523 | * |
| AnnaBridge | 167:e84263d55307 | 524 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 525 | * @return Non-zero if the RX transaction is ongoing, 0 otherwise |
| AnnaBridge | 167:e84263d55307 | 526 | */ |
| AnnaBridge | 167:e84263d55307 | 527 | uint8_t serial_rx_active(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 528 | { |
| AnnaBridge | 167:e84263d55307 | 529 | MBED_ASSERT(obj); |
| AnnaBridge | 167:e84263d55307 | 530 | |
| AnnaBridge | 167:e84263d55307 | 531 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 532 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 533 | |
| AnnaBridge | 167:e84263d55307 | 534 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0); |
| AnnaBridge | 167:e84263d55307 | 535 | } |
| AnnaBridge | 167:e84263d55307 | 536 | |
| AnnaBridge | 167:e84263d55307 | 537 | void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) { |
| AnnaBridge | 167:e84263d55307 | 538 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 539 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
| AnnaBridge | 167:e84263d55307 | 540 | } |
| AnnaBridge | 167:e84263d55307 | 541 | } |
| AnnaBridge | 167:e84263d55307 | 542 | |
| AnnaBridge | 167:e84263d55307 | 543 | void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) { |
| AnnaBridge | 167:e84263d55307 | 544 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 545 | volatile uint32_t tmpval = huart->Instance->DR; // Clear PE flag |
| AnnaBridge | 167:e84263d55307 | 546 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 547 | volatile uint32_t tmpval = huart->Instance->DR; // Clear FE flag |
| AnnaBridge | 167:e84263d55307 | 548 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 549 | volatile uint32_t tmpval = huart->Instance->DR; // Clear NE flag |
| AnnaBridge | 167:e84263d55307 | 550 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 551 | volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag |
| AnnaBridge | 167:e84263d55307 | 552 | } |
| AnnaBridge | 167:e84263d55307 | 553 | } |
| AnnaBridge | 167:e84263d55307 | 554 | |
| AnnaBridge | 167:e84263d55307 | 555 | /** |
| AnnaBridge | 167:e84263d55307 | 556 | * The asynchronous TX and RX handler. |
| AnnaBridge | 167:e84263d55307 | 557 | * |
| AnnaBridge | 167:e84263d55307 | 558 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 559 | * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise |
| AnnaBridge | 167:e84263d55307 | 560 | */ |
| AnnaBridge | 167:e84263d55307 | 561 | int serial_irq_handler_asynch(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 562 | { |
| AnnaBridge | 167:e84263d55307 | 563 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 564 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 565 | |
| AnnaBridge | 167:e84263d55307 | 566 | volatile int return_event = 0; |
| AnnaBridge | 167:e84263d55307 | 567 | uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer); |
| AnnaBridge | 167:e84263d55307 | 568 | uint8_t i = 0; |
| AnnaBridge | 167:e84263d55307 | 569 | |
| AnnaBridge | 167:e84263d55307 | 570 | // TX PART: |
| AnnaBridge | 167:e84263d55307 | 571 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 572 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 573 | // Return event SERIAL_EVENT_TX_COMPLETE if requested |
| AnnaBridge | 167:e84263d55307 | 574 | if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) { |
| AnnaBridge | 167:e84263d55307 | 575 | return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 576 | } |
| AnnaBridge | 167:e84263d55307 | 577 | } |
| AnnaBridge | 167:e84263d55307 | 578 | } |
| AnnaBridge | 167:e84263d55307 | 579 | |
| AnnaBridge | 167:e84263d55307 | 580 | // Handle error events |
| AnnaBridge | 167:e84263d55307 | 581 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 582 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 583 | return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 584 | } |
| AnnaBridge | 167:e84263d55307 | 585 | } |
| AnnaBridge | 167:e84263d55307 | 586 | |
| AnnaBridge | 167:e84263d55307 | 587 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 588 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 589 | return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 590 | } |
| AnnaBridge | 167:e84263d55307 | 591 | } |
| AnnaBridge | 167:e84263d55307 | 592 | |
| AnnaBridge | 167:e84263d55307 | 593 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 594 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| AnnaBridge | 167:e84263d55307 | 595 | return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 596 | } |
| AnnaBridge | 167:e84263d55307 | 597 | } |
| AnnaBridge | 167:e84263d55307 | 598 | |
| AnnaBridge | 167:e84263d55307 | 599 | HAL_UART_IRQHandler(huart); |
| AnnaBridge | 167:e84263d55307 | 600 | |
| AnnaBridge | 167:e84263d55307 | 601 | // Abort if an error occurs |
| AnnaBridge | 167:e84263d55307 | 602 | if (return_event & SERIAL_EVENT_RX_PARITY_ERROR || |
| AnnaBridge | 167:e84263d55307 | 603 | return_event & SERIAL_EVENT_RX_FRAMING_ERROR || |
| AnnaBridge | 167:e84263d55307 | 604 | return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) { |
| AnnaBridge | 167:e84263d55307 | 605 | return return_event; |
| AnnaBridge | 167:e84263d55307 | 606 | } |
| AnnaBridge | 167:e84263d55307 | 607 | |
| AnnaBridge | 167:e84263d55307 | 608 | //RX PART |
| AnnaBridge | 167:e84263d55307 | 609 | if (huart->RxXferSize != 0) { |
| AnnaBridge | 167:e84263d55307 | 610 | obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount; |
| AnnaBridge | 167:e84263d55307 | 611 | } |
| AnnaBridge | 167:e84263d55307 | 612 | if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) { |
| AnnaBridge | 167:e84263d55307 | 613 | return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 614 | } |
| AnnaBridge | 167:e84263d55307 | 615 | |
| AnnaBridge | 167:e84263d55307 | 616 | // Check if char_match is present |
| AnnaBridge | 167:e84263d55307 | 617 | if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) { |
| AnnaBridge | 167:e84263d55307 | 618 | if (buf != NULL) { |
| AnnaBridge | 167:e84263d55307 | 619 | for (i = 0; i < obj->rx_buff.pos; i++) { |
| AnnaBridge | 167:e84263d55307 | 620 | if (buf[i] == obj->char_match) { |
| AnnaBridge | 167:e84263d55307 | 621 | obj->rx_buff.pos = i; |
| AnnaBridge | 167:e84263d55307 | 622 | return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events); |
| AnnaBridge | 167:e84263d55307 | 623 | serial_rx_abort_asynch(obj); |
| AnnaBridge | 167:e84263d55307 | 624 | break; |
| AnnaBridge | 167:e84263d55307 | 625 | } |
| AnnaBridge | 167:e84263d55307 | 626 | } |
| AnnaBridge | 167:e84263d55307 | 627 | } |
| AnnaBridge | 167:e84263d55307 | 628 | } |
| AnnaBridge | 167:e84263d55307 | 629 | |
| AnnaBridge | 167:e84263d55307 | 630 | return return_event; |
| AnnaBridge | 167:e84263d55307 | 631 | } |
| AnnaBridge | 167:e84263d55307 | 632 | |
| AnnaBridge | 167:e84263d55307 | 633 | /** |
| AnnaBridge | 167:e84263d55307 | 634 | * Abort the ongoing TX transaction. It disables the enabled interupt for TX and |
| AnnaBridge | 167:e84263d55307 | 635 | * flush TX hardware buffer if TX FIFO is used |
| AnnaBridge | 167:e84263d55307 | 636 | * |
| AnnaBridge | 167:e84263d55307 | 637 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 638 | */ |
| AnnaBridge | 167:e84263d55307 | 639 | void serial_tx_abort_asynch(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 640 | { |
| AnnaBridge | 167:e84263d55307 | 641 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 642 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 643 | |
| AnnaBridge | 167:e84263d55307 | 644 | __HAL_UART_DISABLE_IT(huart, UART_IT_TC); |
| AnnaBridge | 167:e84263d55307 | 645 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
| AnnaBridge | 167:e84263d55307 | 646 | |
| AnnaBridge | 167:e84263d55307 | 647 | // clear flags |
| AnnaBridge | 167:e84263d55307 | 648 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
| AnnaBridge | 167:e84263d55307 | 649 | |
| AnnaBridge | 167:e84263d55307 | 650 | // reset states |
| AnnaBridge | 167:e84263d55307 | 651 | huart->TxXferCount = 0; |
| AnnaBridge | 167:e84263d55307 | 652 | // update handle state |
| AnnaBridge | 167:e84263d55307 | 653 | if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) { |
| AnnaBridge | 167:e84263d55307 | 654 | huart->gState = HAL_UART_STATE_BUSY_RX; |
| AnnaBridge | 167:e84263d55307 | 655 | } else { |
| AnnaBridge | 167:e84263d55307 | 656 | huart->gState = HAL_UART_STATE_READY; |
| AnnaBridge | 167:e84263d55307 | 657 | } |
| AnnaBridge | 167:e84263d55307 | 658 | } |
| AnnaBridge | 167:e84263d55307 | 659 | |
| AnnaBridge | 167:e84263d55307 | 660 | /** |
| AnnaBridge | 167:e84263d55307 | 661 | * Abort the ongoing RX transaction It disables the enabled interrupt for RX and |
| AnnaBridge | 167:e84263d55307 | 662 | * flush RX hardware buffer if RX FIFO is used |
| AnnaBridge | 167:e84263d55307 | 663 | * |
| AnnaBridge | 167:e84263d55307 | 664 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 665 | */ |
| AnnaBridge | 167:e84263d55307 | 666 | void serial_rx_abort_asynch(serial_t *obj) |
| AnnaBridge | 167:e84263d55307 | 667 | { |
| AnnaBridge | 167:e84263d55307 | 668 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 669 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| AnnaBridge | 167:e84263d55307 | 670 | |
| AnnaBridge | 167:e84263d55307 | 671 | // disable interrupts |
| AnnaBridge | 167:e84263d55307 | 672 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
| AnnaBridge | 167:e84263d55307 | 673 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE); |
| AnnaBridge | 167:e84263d55307 | 674 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR); |
| AnnaBridge | 167:e84263d55307 | 675 | |
| AnnaBridge | 167:e84263d55307 | 676 | // clear flags |
| AnnaBridge | 167:e84263d55307 | 677 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE); |
| AnnaBridge | 167:e84263d55307 | 678 | volatile uint32_t tmpval = huart->Instance->DR; // Clear errors flag |
| AnnaBridge | 167:e84263d55307 | 679 | |
| AnnaBridge | 167:e84263d55307 | 680 | // reset states |
| AnnaBridge | 167:e84263d55307 | 681 | huart->RxXferCount = 0; |
| AnnaBridge | 167:e84263d55307 | 682 | // update handle state |
| AnnaBridge | 167:e84263d55307 | 683 | if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) { |
| AnnaBridge | 167:e84263d55307 | 684 | huart->RxState = HAL_UART_STATE_BUSY_TX; |
| AnnaBridge | 167:e84263d55307 | 685 | } else { |
| AnnaBridge | 167:e84263d55307 | 686 | huart->RxState = HAL_UART_STATE_READY; |
| AnnaBridge | 167:e84263d55307 | 687 | } |
| AnnaBridge | 167:e84263d55307 | 688 | } |
| AnnaBridge | 167:e84263d55307 | 689 | |
| AnnaBridge | 167:e84263d55307 | 690 | #endif |
| AnnaBridge | 167:e84263d55307 | 691 | |
| AnnaBridge | 167:e84263d55307 | 692 | #if DEVICE_SERIAL_FC |
| AnnaBridge | 167:e84263d55307 | 693 | |
| AnnaBridge | 167:e84263d55307 | 694 | /** |
| AnnaBridge | 167:e84263d55307 | 695 | * Set HW Control Flow |
| AnnaBridge | 167:e84263d55307 | 696 | * @param obj The serial object |
| AnnaBridge | 167:e84263d55307 | 697 | * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS) |
| AnnaBridge | 167:e84263d55307 | 698 | * @param rxflow Pin for the rxflow |
| AnnaBridge | 167:e84263d55307 | 699 | * @param txflow Pin for the txflow |
| AnnaBridge | 167:e84263d55307 | 700 | */ |
| AnnaBridge | 167:e84263d55307 | 701 | void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) |
| AnnaBridge | 167:e84263d55307 | 702 | { |
| AnnaBridge | 167:e84263d55307 | 703 | struct serial_s *obj_s = SERIAL_S(obj); |
| AnnaBridge | 167:e84263d55307 | 704 | |
| AnnaBridge | 167:e84263d55307 | 705 | // Determine the UART to use (UART_1, UART_2, ...) |
| AnnaBridge | 167:e84263d55307 | 706 | UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS); |
| AnnaBridge | 167:e84263d55307 | 707 | UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS); |
| AnnaBridge | 167:e84263d55307 | 708 | |
| AnnaBridge | 167:e84263d55307 | 709 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
| AnnaBridge | 167:e84263d55307 | 710 | obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts); |
| AnnaBridge | 167:e84263d55307 | 711 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 712 | |
| AnnaBridge | 167:e84263d55307 | 713 | if(type == FlowControlNone) { |
| AnnaBridge | 167:e84263d55307 | 714 | // Disable hardware flow control |
| AnnaBridge | 167:e84263d55307 | 715 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
| AnnaBridge | 167:e84263d55307 | 716 | } |
| AnnaBridge | 167:e84263d55307 | 717 | if (type == FlowControlRTS) { |
| AnnaBridge | 167:e84263d55307 | 718 | // Enable RTS |
| AnnaBridge | 167:e84263d55307 | 719 | MBED_ASSERT(uart_rts != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 720 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS; |
| AnnaBridge | 167:e84263d55307 | 721 | obj_s->pin_rts = rxflow; |
| AnnaBridge | 167:e84263d55307 | 722 | // Enable the pin for RTS function |
| AnnaBridge | 167:e84263d55307 | 723 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
| AnnaBridge | 167:e84263d55307 | 724 | } |
| AnnaBridge | 167:e84263d55307 | 725 | if (type == FlowControlCTS) { |
| AnnaBridge | 167:e84263d55307 | 726 | // Enable CTS |
| AnnaBridge | 167:e84263d55307 | 727 | MBED_ASSERT(uart_cts != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 728 | obj_s->hw_flow_ctl = UART_HWCONTROL_CTS; |
| AnnaBridge | 167:e84263d55307 | 729 | obj_s->pin_cts = txflow; |
| AnnaBridge | 167:e84263d55307 | 730 | // Enable the pin for CTS function |
| AnnaBridge | 167:e84263d55307 | 731 | pinmap_pinout(txflow, PinMap_UART_CTS); |
| AnnaBridge | 167:e84263d55307 | 732 | } |
| AnnaBridge | 167:e84263d55307 | 733 | if (type == FlowControlRTSCTS) { |
| AnnaBridge | 167:e84263d55307 | 734 | // Enable CTS & RTS |
| AnnaBridge | 167:e84263d55307 | 735 | MBED_ASSERT(uart_rts != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 736 | MBED_ASSERT(uart_cts != (UARTName)NC); |
| AnnaBridge | 167:e84263d55307 | 737 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS; |
| AnnaBridge | 167:e84263d55307 | 738 | obj_s->pin_rts = rxflow; |
| AnnaBridge | 167:e84263d55307 | 739 | obj_s->pin_cts = txflow; |
| AnnaBridge | 167:e84263d55307 | 740 | // Enable the pin for CTS function |
| AnnaBridge | 167:e84263d55307 | 741 | pinmap_pinout(txflow, PinMap_UART_CTS); |
| AnnaBridge | 167:e84263d55307 | 742 | // Enable the pin for RTS function |
| AnnaBridge | 167:e84263d55307 | 743 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
| AnnaBridge | 167:e84263d55307 | 744 | } |
| AnnaBridge | 167:e84263d55307 | 745 | |
| AnnaBridge | 167:e84263d55307 | 746 | init_uart(obj); |
| AnnaBridge | 167:e84263d55307 | 747 | } |
| AnnaBridge | 167:e84263d55307 | 748 | |
| AnnaBridge | 167:e84263d55307 | 749 | #endif |
| AnnaBridge | 167:e84263d55307 | 750 | |
| AnnaBridge | 167:e84263d55307 | 751 | #endif |