t
Fork of mbed-dev by
targets/TARGET_STM/TARGET_STM32F2/serial_api.c@178:c26431f84b0d, 2017-11-09 (annotated)
- Committer:
- amithy
- Date:
- Thu Nov 09 22:14:37 2017 +0000
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
test export
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 149:156823d33999 | 1 | /* mbed Microcontroller Library |
<> | 149:156823d33999 | 2 | ******************************************************************************* |
<> | 149:156823d33999 | 3 | * Copyright (c) 2016, STMicroelectronics |
<> | 149:156823d33999 | 4 | * All rights reserved. |
<> | 149:156823d33999 | 5 | * |
<> | 149:156823d33999 | 6 | * Redistribution and use in source and binary forms, with or without |
<> | 149:156823d33999 | 7 | * modification, are permitted provided that the following conditions are met: |
<> | 149:156823d33999 | 8 | * |
<> | 149:156823d33999 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 149:156823d33999 | 10 | * this list of conditions and the following disclaimer. |
<> | 149:156823d33999 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 149:156823d33999 | 12 | * this list of conditions and the following disclaimer in the documentation |
<> | 149:156823d33999 | 13 | * and/or other materials provided with the distribution. |
<> | 149:156823d33999 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 149:156823d33999 | 15 | * may be used to endorse or promote products derived from this software |
<> | 149:156823d33999 | 16 | * without specific prior written permission. |
<> | 149:156823d33999 | 17 | * |
<> | 149:156823d33999 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 149:156823d33999 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 149:156823d33999 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 149:156823d33999 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 149:156823d33999 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 149:156823d33999 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 149:156823d33999 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 149:156823d33999 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 149:156823d33999 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 149:156823d33999 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 149:156823d33999 | 28 | ******************************************************************************* |
<> | 149:156823d33999 | 29 | */ |
<> | 149:156823d33999 | 30 | #include "mbed_assert.h" |
<> | 149:156823d33999 | 31 | #include "serial_api.h" |
<> | 149:156823d33999 | 32 | |
<> | 149:156823d33999 | 33 | #if DEVICE_SERIAL |
<> | 149:156823d33999 | 34 | |
<> | 149:156823d33999 | 35 | #include "cmsis.h" |
<> | 149:156823d33999 | 36 | #include "pinmap.h" |
<> | 149:156823d33999 | 37 | #include <string.h> |
<> | 149:156823d33999 | 38 | #include "PeripheralPins.h" |
<> | 149:156823d33999 | 39 | #include "mbed_error.h" |
<> | 149:156823d33999 | 40 | |
<> | 149:156823d33999 | 41 | #define UART_NUM (8) |
<> | 149:156823d33999 | 42 | |
<> | 149:156823d33999 | 43 | static uint32_t serial_irq_ids[UART_NUM] = {0}; |
<> | 149:156823d33999 | 44 | static UART_HandleTypeDef uart_handlers[UART_NUM]; |
<> | 149:156823d33999 | 45 | |
<> | 149:156823d33999 | 46 | static uart_irq_handler irq_handler; |
<> | 149:156823d33999 | 47 | |
<> | 149:156823d33999 | 48 | int stdio_uart_inited = 0; |
<> | 149:156823d33999 | 49 | serial_t stdio_uart; |
<> | 149:156823d33999 | 50 | |
<> | 149:156823d33999 | 51 | #if DEVICE_SERIAL_ASYNCH |
<> | 149:156823d33999 | 52 | #define SERIAL_S(obj) (&((obj)->serial)) |
<> | 149:156823d33999 | 53 | #else |
<> | 149:156823d33999 | 54 | #define SERIAL_S(obj) (obj) |
<> | 149:156823d33999 | 55 | #endif |
<> | 149:156823d33999 | 56 | |
<> | 149:156823d33999 | 57 | static void init_uart(serial_t *obj) |
<> | 149:156823d33999 | 58 | { |
<> | 149:156823d33999 | 59 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 60 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 61 | huart->Instance = (USART_TypeDef *)(obj_s->uart); |
<> | 149:156823d33999 | 62 | |
<> | 149:156823d33999 | 63 | huart->Init.BaudRate = obj_s->baudrate; |
<> | 149:156823d33999 | 64 | huart->Init.WordLength = obj_s->databits; |
<> | 149:156823d33999 | 65 | huart->Init.StopBits = obj_s->stopbits; |
<> | 149:156823d33999 | 66 | huart->Init.Parity = obj_s->parity; |
<> | 149:156823d33999 | 67 | #if DEVICE_SERIAL_FC |
<> | 149:156823d33999 | 68 | huart->Init.HwFlowCtl = obj_s->hw_flow_ctl; |
<> | 149:156823d33999 | 69 | #else |
<> | 149:156823d33999 | 70 | huart->Init.HwFlowCtl = UART_HWCONTROL_NONE; |
<> | 149:156823d33999 | 71 | #endif |
<> | 149:156823d33999 | 72 | huart->TxXferCount = 0; |
<> | 149:156823d33999 | 73 | huart->TxXferSize = 0; |
<> | 149:156823d33999 | 74 | huart->RxXferCount = 0; |
<> | 149:156823d33999 | 75 | huart->RxXferSize = 0; |
<> | 149:156823d33999 | 76 | |
<> | 149:156823d33999 | 77 | if (obj_s->pin_rx == NC) { |
<> | 149:156823d33999 | 78 | huart->Init.Mode = UART_MODE_TX; |
<> | 149:156823d33999 | 79 | } else if (obj_s->pin_tx == NC) { |
<> | 149:156823d33999 | 80 | huart->Init.Mode = UART_MODE_RX; |
<> | 149:156823d33999 | 81 | } else { |
<> | 149:156823d33999 | 82 | huart->Init.Mode = UART_MODE_TX_RX; |
<> | 149:156823d33999 | 83 | } |
<> | 149:156823d33999 | 84 | |
<> | 149:156823d33999 | 85 | if (HAL_UART_Init(huart) != HAL_OK) { |
<> | 149:156823d33999 | 86 | error("Cannot initialize UART\n"); |
<> | 149:156823d33999 | 87 | } |
<> | 149:156823d33999 | 88 | } |
<> | 149:156823d33999 | 89 | |
<> | 149:156823d33999 | 90 | void serial_init(serial_t *obj, PinName tx, PinName rx) |
<> | 149:156823d33999 | 91 | { |
<> | 149:156823d33999 | 92 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 93 | |
<> | 149:156823d33999 | 94 | // Determine the UART to use (UART_1, UART_2, ...) |
<> | 149:156823d33999 | 95 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
<> | 149:156823d33999 | 96 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
<> | 149:156823d33999 | 97 | |
<> | 149:156823d33999 | 98 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
<> | 149:156823d33999 | 99 | obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
<> | 149:156823d33999 | 100 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
<> | 149:156823d33999 | 101 | |
<> | 149:156823d33999 | 102 | // Enable USART clock |
<> | 149:156823d33999 | 103 | switch (obj_s->uart) { |
<> | 149:156823d33999 | 104 | case UART_1: |
<> | 149:156823d33999 | 105 | __HAL_RCC_USART1_FORCE_RESET(); |
<> | 149:156823d33999 | 106 | __HAL_RCC_USART1_RELEASE_RESET(); |
<> | 149:156823d33999 | 107 | __HAL_RCC_USART1_CLK_ENABLE(); |
<> | 149:156823d33999 | 108 | obj_s->index = 0; |
<> | 149:156823d33999 | 109 | break; |
<> | 149:156823d33999 | 110 | |
<> | 149:156823d33999 | 111 | case UART_2: |
<> | 149:156823d33999 | 112 | __HAL_RCC_USART2_FORCE_RESET(); |
<> | 149:156823d33999 | 113 | __HAL_RCC_USART2_RELEASE_RESET(); |
<> | 149:156823d33999 | 114 | __HAL_RCC_USART2_CLK_ENABLE(); |
<> | 149:156823d33999 | 115 | obj_s->index = 1; |
<> | 149:156823d33999 | 116 | break; |
<> | 149:156823d33999 | 117 | |
<> | 149:156823d33999 | 118 | #if defined(USART3_BASE) |
<> | 149:156823d33999 | 119 | case UART_3: |
<> | 149:156823d33999 | 120 | __HAL_RCC_USART3_FORCE_RESET(); |
<> | 149:156823d33999 | 121 | __HAL_RCC_USART3_RELEASE_RESET(); |
<> | 149:156823d33999 | 122 | __HAL_RCC_USART3_CLK_ENABLE(); |
<> | 149:156823d33999 | 123 | obj_s->index = 2; |
<> | 149:156823d33999 | 124 | break; |
<> | 149:156823d33999 | 125 | #endif |
<> | 149:156823d33999 | 126 | #if defined(UART4_BASE) |
<> | 149:156823d33999 | 127 | case UART_4: |
<> | 149:156823d33999 | 128 | __HAL_RCC_UART4_FORCE_RESET(); |
<> | 149:156823d33999 | 129 | __HAL_RCC_UART4_RELEASE_RESET(); |
<> | 149:156823d33999 | 130 | __HAL_RCC_UART4_CLK_ENABLE(); |
<> | 149:156823d33999 | 131 | obj_s->index = 3; |
<> | 149:156823d33999 | 132 | break; |
<> | 149:156823d33999 | 133 | #endif |
<> | 149:156823d33999 | 134 | #if defined(UART5_BASE) |
<> | 149:156823d33999 | 135 | case UART_5: |
<> | 149:156823d33999 | 136 | __HAL_RCC_UART5_FORCE_RESET(); |
<> | 149:156823d33999 | 137 | __HAL_RCC_UART5_RELEASE_RESET(); |
<> | 149:156823d33999 | 138 | __HAL_RCC_UART5_CLK_ENABLE(); |
<> | 149:156823d33999 | 139 | obj_s->index = 4; |
<> | 149:156823d33999 | 140 | break; |
<> | 149:156823d33999 | 141 | #endif |
<> | 149:156823d33999 | 142 | #if defined(USART6_BASE) |
<> | 149:156823d33999 | 143 | case UART_6: |
<> | 149:156823d33999 | 144 | __HAL_RCC_USART6_FORCE_RESET(); |
<> | 149:156823d33999 | 145 | __HAL_RCC_USART6_RELEASE_RESET(); |
<> | 149:156823d33999 | 146 | __HAL_RCC_USART6_CLK_ENABLE(); |
<> | 149:156823d33999 | 147 | obj_s->index = 5; |
<> | 149:156823d33999 | 148 | break; |
<> | 149:156823d33999 | 149 | #endif |
<> | 149:156823d33999 | 150 | #if defined(UART7_BASE) |
<> | 149:156823d33999 | 151 | case UART_7: |
<> | 149:156823d33999 | 152 | __HAL_RCC_UART7_FORCE_RESET(); |
<> | 149:156823d33999 | 153 | __HAL_RCC_UART7_RELEASE_RESET(); |
<> | 149:156823d33999 | 154 | __HAL_RCC_UART7_CLK_ENABLE(); |
<> | 149:156823d33999 | 155 | obj_s->index = 6; |
<> | 149:156823d33999 | 156 | break; |
<> | 149:156823d33999 | 157 | #endif |
<> | 149:156823d33999 | 158 | #if defined(UART8_BASE) |
<> | 149:156823d33999 | 159 | case UART_8: |
<> | 149:156823d33999 | 160 | __HAL_RCC_UART8_FORCE_RESET(); |
<> | 149:156823d33999 | 161 | __HAL_RCC_UART8_RELEASE_RESET(); |
<> | 149:156823d33999 | 162 | __HAL_RCC_UART8_CLK_ENABLE(); |
<> | 149:156823d33999 | 163 | obj_s->index = 7; |
<> | 149:156823d33999 | 164 | break; |
<> | 149:156823d33999 | 165 | #endif |
<> | 149:156823d33999 | 166 | } |
<> | 149:156823d33999 | 167 | |
<> | 149:156823d33999 | 168 | // Configure the UART pins |
<> | 149:156823d33999 | 169 | pinmap_pinout(tx, PinMap_UART_TX); |
<> | 149:156823d33999 | 170 | pinmap_pinout(rx, PinMap_UART_RX); |
<> | 149:156823d33999 | 171 | |
<> | 149:156823d33999 | 172 | if (tx != NC) { |
<> | 149:156823d33999 | 173 | pin_mode(tx, PullUp); |
<> | 149:156823d33999 | 174 | } |
<> | 149:156823d33999 | 175 | if (rx != NC) { |
<> | 149:156823d33999 | 176 | pin_mode(rx, PullUp); |
<> | 149:156823d33999 | 177 | } |
<> | 149:156823d33999 | 178 | |
<> | 149:156823d33999 | 179 | // Configure UART |
<> | 149:156823d33999 | 180 | obj_s->baudrate = 9600; |
<> | 149:156823d33999 | 181 | obj_s->databits = UART_WORDLENGTH_8B; |
<> | 149:156823d33999 | 182 | obj_s->stopbits = UART_STOPBITS_1; |
<> | 149:156823d33999 | 183 | obj_s->parity = UART_PARITY_NONE; |
<> | 149:156823d33999 | 184 | |
<> | 149:156823d33999 | 185 | #if DEVICE_SERIAL_FC |
<> | 149:156823d33999 | 186 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
<> | 149:156823d33999 | 187 | #endif |
<> | 149:156823d33999 | 188 | |
<> | 149:156823d33999 | 189 | obj_s->pin_tx = tx; |
<> | 149:156823d33999 | 190 | obj_s->pin_rx = rx; |
<> | 149:156823d33999 | 191 | |
<> | 149:156823d33999 | 192 | init_uart(obj); |
<> | 149:156823d33999 | 193 | |
<> | 149:156823d33999 | 194 | // For stdio management |
<> | 149:156823d33999 | 195 | if (obj_s->uart == STDIO_UART) { |
<> | 149:156823d33999 | 196 | stdio_uart_inited = 1; |
<> | 149:156823d33999 | 197 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
<> | 149:156823d33999 | 198 | } |
<> | 149:156823d33999 | 199 | } |
<> | 149:156823d33999 | 200 | |
<> | 149:156823d33999 | 201 | void serial_free(serial_t *obj) |
<> | 149:156823d33999 | 202 | { |
<> | 149:156823d33999 | 203 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 204 | |
<> | 149:156823d33999 | 205 | // Reset UART and disable clock |
<> | 149:156823d33999 | 206 | switch (obj_s->index) { |
<> | 149:156823d33999 | 207 | case 0: |
<> | 149:156823d33999 | 208 | __USART1_FORCE_RESET(); |
<> | 149:156823d33999 | 209 | __USART1_RELEASE_RESET(); |
<> | 149:156823d33999 | 210 | __USART1_CLK_DISABLE(); |
<> | 149:156823d33999 | 211 | break; |
<> | 149:156823d33999 | 212 | |
<> | 149:156823d33999 | 213 | case 1: |
<> | 149:156823d33999 | 214 | __USART2_FORCE_RESET(); |
<> | 149:156823d33999 | 215 | __USART2_RELEASE_RESET(); |
<> | 149:156823d33999 | 216 | __USART2_CLK_DISABLE(); |
<> | 149:156823d33999 | 217 | break; |
<> | 149:156823d33999 | 218 | |
<> | 149:156823d33999 | 219 | #if defined(USART3_BASE) |
<> | 149:156823d33999 | 220 | case 2: |
<> | 149:156823d33999 | 221 | __USART3_FORCE_RESET(); |
<> | 149:156823d33999 | 222 | __USART3_RELEASE_RESET(); |
<> | 149:156823d33999 | 223 | __USART3_CLK_DISABLE(); |
<> | 149:156823d33999 | 224 | break; |
<> | 149:156823d33999 | 225 | #endif |
<> | 149:156823d33999 | 226 | #if defined(UART4_BASE) |
<> | 149:156823d33999 | 227 | case 3: |
<> | 149:156823d33999 | 228 | __UART4_FORCE_RESET(); |
<> | 149:156823d33999 | 229 | __UART4_RELEASE_RESET(); |
<> | 149:156823d33999 | 230 | __UART4_CLK_DISABLE(); |
<> | 149:156823d33999 | 231 | break; |
<> | 149:156823d33999 | 232 | #endif |
<> | 149:156823d33999 | 233 | #if defined(UART5_BASE) |
<> | 149:156823d33999 | 234 | case 4: |
<> | 149:156823d33999 | 235 | __UART5_FORCE_RESET(); |
<> | 149:156823d33999 | 236 | __UART5_RELEASE_RESET(); |
<> | 149:156823d33999 | 237 | __UART5_CLK_DISABLE(); |
<> | 149:156823d33999 | 238 | break; |
<> | 149:156823d33999 | 239 | #endif |
<> | 149:156823d33999 | 240 | #if defined(USART6_BASE) |
<> | 149:156823d33999 | 241 | case 5: |
<> | 149:156823d33999 | 242 | __USART6_FORCE_RESET(); |
<> | 149:156823d33999 | 243 | __USART6_RELEASE_RESET(); |
<> | 149:156823d33999 | 244 | __USART6_CLK_DISABLE(); |
<> | 149:156823d33999 | 245 | break; |
<> | 149:156823d33999 | 246 | #endif |
<> | 149:156823d33999 | 247 | #if defined(UART7_BASE) |
<> | 149:156823d33999 | 248 | case 6: |
<> | 149:156823d33999 | 249 | __UART7_FORCE_RESET(); |
<> | 149:156823d33999 | 250 | __UART7_RELEASE_RESET(); |
<> | 149:156823d33999 | 251 | __UART7_CLK_DISABLE(); |
<> | 149:156823d33999 | 252 | break; |
<> | 149:156823d33999 | 253 | #endif |
<> | 149:156823d33999 | 254 | #if defined(UART8_BASE) |
<> | 149:156823d33999 | 255 | case 7: |
<> | 149:156823d33999 | 256 | __UART8_FORCE_RESET(); |
<> | 149:156823d33999 | 257 | __UART8_RELEASE_RESET(); |
<> | 149:156823d33999 | 258 | __UART8_CLK_DISABLE(); |
<> | 149:156823d33999 | 259 | break; |
<> | 149:156823d33999 | 260 | #endif |
<> | 149:156823d33999 | 261 | } |
<> | 149:156823d33999 | 262 | |
<> | 149:156823d33999 | 263 | // Configure GPIOs |
<> | 149:156823d33999 | 264 | pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
<> | 149:156823d33999 | 265 | pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
<> | 149:156823d33999 | 266 | |
<> | 149:156823d33999 | 267 | serial_irq_ids[obj_s->index] = 0; |
<> | 149:156823d33999 | 268 | } |
<> | 149:156823d33999 | 269 | |
<> | 149:156823d33999 | 270 | void serial_baud(serial_t *obj, int baudrate) |
<> | 149:156823d33999 | 271 | { |
<> | 149:156823d33999 | 272 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 273 | |
<> | 149:156823d33999 | 274 | obj_s->baudrate = baudrate; |
<> | 149:156823d33999 | 275 | init_uart(obj); |
<> | 149:156823d33999 | 276 | } |
<> | 149:156823d33999 | 277 | |
<> | 149:156823d33999 | 278 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) |
<> | 149:156823d33999 | 279 | { |
<> | 149:156823d33999 | 280 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 281 | |
<> | 149:156823d33999 | 282 | if (data_bits == 9) { |
<> | 149:156823d33999 | 283 | obj_s->databits = UART_WORDLENGTH_9B; |
<> | 149:156823d33999 | 284 | } else { |
<> | 149:156823d33999 | 285 | obj_s->databits = UART_WORDLENGTH_8B; |
<> | 149:156823d33999 | 286 | } |
<> | 149:156823d33999 | 287 | |
<> | 149:156823d33999 | 288 | switch (parity) { |
<> | 149:156823d33999 | 289 | case ParityOdd: |
<> | 149:156823d33999 | 290 | obj_s->parity = UART_PARITY_ODD; |
<> | 149:156823d33999 | 291 | break; |
<> | 149:156823d33999 | 292 | case ParityEven: |
<> | 149:156823d33999 | 293 | obj_s->parity = UART_PARITY_EVEN; |
<> | 149:156823d33999 | 294 | break; |
<> | 149:156823d33999 | 295 | default: // ParityNone |
<> | 149:156823d33999 | 296 | case ParityForced0: // unsupported! |
<> | 149:156823d33999 | 297 | case ParityForced1: // unsupported! |
<> | 149:156823d33999 | 298 | obj_s->parity = UART_PARITY_NONE; |
<> | 149:156823d33999 | 299 | break; |
<> | 149:156823d33999 | 300 | } |
<> | 149:156823d33999 | 301 | |
<> | 149:156823d33999 | 302 | if (stop_bits == 2) { |
<> | 149:156823d33999 | 303 | obj_s->stopbits = UART_STOPBITS_2; |
<> | 149:156823d33999 | 304 | } else { |
<> | 149:156823d33999 | 305 | obj_s->stopbits = UART_STOPBITS_1; |
<> | 149:156823d33999 | 306 | } |
<> | 149:156823d33999 | 307 | |
<> | 149:156823d33999 | 308 | init_uart(obj); |
<> | 149:156823d33999 | 309 | } |
<> | 149:156823d33999 | 310 | |
<> | 149:156823d33999 | 311 | /****************************************************************************** |
<> | 149:156823d33999 | 312 | * INTERRUPTS HANDLING |
<> | 149:156823d33999 | 313 | ******************************************************************************/ |
<> | 149:156823d33999 | 314 | |
<> | 149:156823d33999 | 315 | static void uart_irq(int id) |
<> | 149:156823d33999 | 316 | { |
<> | 149:156823d33999 | 317 | UART_HandleTypeDef * huart = &uart_handlers[id]; |
<> | 149:156823d33999 | 318 | |
<> | 149:156823d33999 | 319 | if (serial_irq_ids[id] != 0) { |
<> | 149:156823d33999 | 320 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
<> | 149:156823d33999 | 321 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) { |
<> | 149:156823d33999 | 322 | irq_handler(serial_irq_ids[id], TxIrq); |
<> | 149:156823d33999 | 323 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
<> | 149:156823d33999 | 324 | } |
<> | 149:156823d33999 | 325 | } |
<> | 149:156823d33999 | 326 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) { |
<> | 149:156823d33999 | 327 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) { |
<> | 149:156823d33999 | 328 | irq_handler(serial_irq_ids[id], RxIrq); |
<> | 149:156823d33999 | 329 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE); |
<> | 149:156823d33999 | 330 | } |
<> | 149:156823d33999 | 331 | } |
<> | 149:156823d33999 | 332 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
<> | 149:156823d33999 | 333 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
<> | 149:156823d33999 | 334 | volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag |
<> | 149:156823d33999 | 335 | } |
<> | 149:156823d33999 | 336 | } |
<> | 149:156823d33999 | 337 | } |
<> | 149:156823d33999 | 338 | } |
<> | 149:156823d33999 | 339 | |
<> | 149:156823d33999 | 340 | static void uart1_irq(void) |
<> | 149:156823d33999 | 341 | { |
<> | 149:156823d33999 | 342 | uart_irq(0); |
<> | 149:156823d33999 | 343 | } |
<> | 149:156823d33999 | 344 | |
<> | 149:156823d33999 | 345 | static void uart2_irq(void) |
<> | 149:156823d33999 | 346 | { |
<> | 149:156823d33999 | 347 | uart_irq(1); |
<> | 149:156823d33999 | 348 | } |
<> | 149:156823d33999 | 349 | |
<> | 149:156823d33999 | 350 | #if defined(USART3_BASE) |
<> | 149:156823d33999 | 351 | static void uart3_irq(void) |
<> | 149:156823d33999 | 352 | { |
<> | 149:156823d33999 | 353 | uart_irq(2); |
<> | 149:156823d33999 | 354 | } |
<> | 149:156823d33999 | 355 | #endif |
<> | 149:156823d33999 | 356 | |
<> | 149:156823d33999 | 357 | #if defined(UART4_BASE) |
<> | 149:156823d33999 | 358 | static void uart4_irq(void) |
<> | 149:156823d33999 | 359 | { |
<> | 149:156823d33999 | 360 | uart_irq(3); |
<> | 149:156823d33999 | 361 | } |
<> | 149:156823d33999 | 362 | #endif |
<> | 149:156823d33999 | 363 | |
<> | 149:156823d33999 | 364 | #if defined(UART5_BASE) |
<> | 149:156823d33999 | 365 | static void uart5_irq(void) |
<> | 149:156823d33999 | 366 | { |
<> | 149:156823d33999 | 367 | uart_irq(4); |
<> | 149:156823d33999 | 368 | } |
<> | 149:156823d33999 | 369 | #endif |
<> | 149:156823d33999 | 370 | |
<> | 149:156823d33999 | 371 | #if defined(USART6_BASE) |
<> | 149:156823d33999 | 372 | static void uart6_irq(void) |
<> | 149:156823d33999 | 373 | { |
<> | 149:156823d33999 | 374 | uart_irq(5); |
<> | 149:156823d33999 | 375 | } |
<> | 149:156823d33999 | 376 | #endif |
<> | 149:156823d33999 | 377 | |
<> | 149:156823d33999 | 378 | #if defined(UART7_BASE) |
<> | 149:156823d33999 | 379 | static void uart7_irq(void) |
<> | 149:156823d33999 | 380 | { |
<> | 149:156823d33999 | 381 | uart_irq(6); |
<> | 149:156823d33999 | 382 | } |
<> | 149:156823d33999 | 383 | #endif |
<> | 149:156823d33999 | 384 | |
<> | 149:156823d33999 | 385 | #if defined(UART8_BASE) |
<> | 149:156823d33999 | 386 | static void uart8_irq(void) |
<> | 149:156823d33999 | 387 | { |
<> | 149:156823d33999 | 388 | uart_irq(7); |
<> | 149:156823d33999 | 389 | } |
<> | 149:156823d33999 | 390 | #endif |
<> | 149:156823d33999 | 391 | |
<> | 149:156823d33999 | 392 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) |
<> | 149:156823d33999 | 393 | { |
<> | 149:156823d33999 | 394 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 395 | |
<> | 149:156823d33999 | 396 | irq_handler = handler; |
<> | 149:156823d33999 | 397 | serial_irq_ids[obj_s->index] = id; |
<> | 149:156823d33999 | 398 | } |
<> | 149:156823d33999 | 399 | |
<> | 149:156823d33999 | 400 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) |
<> | 149:156823d33999 | 401 | { |
<> | 149:156823d33999 | 402 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 403 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 404 | IRQn_Type irq_n = (IRQn_Type)0; |
<> | 149:156823d33999 | 405 | uint32_t vector = 0; |
<> | 149:156823d33999 | 406 | |
<> | 149:156823d33999 | 407 | switch (obj_s->index) { |
<> | 149:156823d33999 | 408 | case 0: |
<> | 149:156823d33999 | 409 | irq_n = USART1_IRQn; |
<> | 149:156823d33999 | 410 | vector = (uint32_t)&uart1_irq; |
<> | 149:156823d33999 | 411 | break; |
<> | 149:156823d33999 | 412 | |
<> | 149:156823d33999 | 413 | case 1: |
<> | 149:156823d33999 | 414 | irq_n = USART2_IRQn; |
<> | 149:156823d33999 | 415 | vector = (uint32_t)&uart2_irq; |
<> | 149:156823d33999 | 416 | break; |
<> | 149:156823d33999 | 417 | #if defined(USART3_BASE) |
<> | 149:156823d33999 | 418 | case 2: |
<> | 149:156823d33999 | 419 | irq_n = USART3_IRQn; |
<> | 149:156823d33999 | 420 | vector = (uint32_t)&uart3_irq; |
<> | 149:156823d33999 | 421 | break; |
<> | 149:156823d33999 | 422 | #endif |
<> | 149:156823d33999 | 423 | #if defined(UART4_BASE) |
<> | 149:156823d33999 | 424 | case 3: |
<> | 149:156823d33999 | 425 | irq_n = UART4_IRQn; |
<> | 149:156823d33999 | 426 | vector = (uint32_t)&uart4_irq; |
<> | 149:156823d33999 | 427 | break; |
<> | 149:156823d33999 | 428 | #endif |
<> | 149:156823d33999 | 429 | #if defined(UART5_BASE) |
<> | 149:156823d33999 | 430 | case 4: |
<> | 149:156823d33999 | 431 | irq_n = UART5_IRQn; |
<> | 149:156823d33999 | 432 | vector = (uint32_t)&uart5_irq; |
<> | 149:156823d33999 | 433 | break; |
<> | 149:156823d33999 | 434 | #endif |
<> | 149:156823d33999 | 435 | #if defined(USART6_BASE) |
<> | 149:156823d33999 | 436 | case 5: |
<> | 149:156823d33999 | 437 | irq_n = USART6_IRQn; |
<> | 149:156823d33999 | 438 | vector = (uint32_t)&uart6_irq; |
<> | 149:156823d33999 | 439 | break; |
<> | 149:156823d33999 | 440 | #endif |
<> | 149:156823d33999 | 441 | #if defined(UART7_BASE) |
<> | 149:156823d33999 | 442 | case 6: |
<> | 149:156823d33999 | 443 | irq_n = UART7_IRQn; |
<> | 149:156823d33999 | 444 | vector = (uint32_t)&uart7_irq; |
<> | 149:156823d33999 | 445 | break; |
<> | 149:156823d33999 | 446 | #endif |
<> | 149:156823d33999 | 447 | #if defined(UART8_BASE) |
<> | 149:156823d33999 | 448 | case 7: |
<> | 149:156823d33999 | 449 | irq_n = UART8_IRQn; |
<> | 149:156823d33999 | 450 | vector = (uint32_t)&uart8_irq; |
<> | 149:156823d33999 | 451 | break; |
<> | 149:156823d33999 | 452 | #endif |
<> | 149:156823d33999 | 453 | } |
<> | 149:156823d33999 | 454 | |
<> | 149:156823d33999 | 455 | if (enable) { |
<> | 149:156823d33999 | 456 | if (irq == RxIrq) { |
<> | 149:156823d33999 | 457 | __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE); |
<> | 149:156823d33999 | 458 | } else { // TxIrq |
<> | 149:156823d33999 | 459 | __HAL_UART_ENABLE_IT(huart, UART_IT_TC); |
<> | 149:156823d33999 | 460 | } |
<> | 149:156823d33999 | 461 | NVIC_SetVector(irq_n, vector); |
<> | 149:156823d33999 | 462 | NVIC_EnableIRQ(irq_n); |
<> | 149:156823d33999 | 463 | |
<> | 149:156823d33999 | 464 | } else { // disable |
<> | 149:156823d33999 | 465 | int all_disabled = 0; |
<> | 149:156823d33999 | 466 | if (irq == RxIrq) { |
<> | 149:156823d33999 | 467 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
<> | 149:156823d33999 | 468 | // Check if TxIrq is disabled too |
<> | 149:156823d33999 | 469 | if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) { |
<> | 149:156823d33999 | 470 | all_disabled = 1; |
<> | 149:156823d33999 | 471 | } |
<> | 149:156823d33999 | 472 | } else { // TxIrq |
<> | 149:156823d33999 | 473 | __HAL_UART_DISABLE_IT(huart, UART_IT_TC); |
<> | 149:156823d33999 | 474 | // Check if RxIrq is disabled too |
<> | 149:156823d33999 | 475 | if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) { |
<> | 149:156823d33999 | 476 | all_disabled = 1; |
<> | 149:156823d33999 | 477 | } |
<> | 149:156823d33999 | 478 | } |
<> | 149:156823d33999 | 479 | |
<> | 149:156823d33999 | 480 | if (all_disabled) { |
<> | 149:156823d33999 | 481 | NVIC_DisableIRQ(irq_n); |
<> | 149:156823d33999 | 482 | } |
<> | 149:156823d33999 | 483 | } |
<> | 149:156823d33999 | 484 | } |
<> | 149:156823d33999 | 485 | |
<> | 149:156823d33999 | 486 | /****************************************************************************** |
<> | 149:156823d33999 | 487 | * READ/WRITE |
<> | 149:156823d33999 | 488 | ******************************************************************************/ |
<> | 149:156823d33999 | 489 | |
<> | 149:156823d33999 | 490 | int serial_getc(serial_t *obj) |
<> | 149:156823d33999 | 491 | { |
<> | 149:156823d33999 | 492 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 493 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 494 | |
<> | 149:156823d33999 | 495 | while (!serial_readable(obj)); |
<> | 149:156823d33999 | 496 | return (int)(huart->Instance->DR & (uint16_t)0x1FF); |
<> | 149:156823d33999 | 497 | } |
<> | 149:156823d33999 | 498 | |
<> | 149:156823d33999 | 499 | void serial_putc(serial_t *obj, int c) |
<> | 149:156823d33999 | 500 | { |
<> | 149:156823d33999 | 501 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 502 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 503 | |
<> | 149:156823d33999 | 504 | while (!serial_writable(obj)); |
<> | 149:156823d33999 | 505 | huart->Instance->DR = (uint32_t)(c & (uint16_t)0x1FF); |
<> | 149:156823d33999 | 506 | } |
<> | 149:156823d33999 | 507 | |
<> | 149:156823d33999 | 508 | int serial_readable(serial_t *obj) |
<> | 149:156823d33999 | 509 | { |
<> | 149:156823d33999 | 510 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 511 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 512 | |
<> | 149:156823d33999 | 513 | // Check if data is received |
<> | 149:156823d33999 | 514 | return (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) ? 1 : 0; |
<> | 149:156823d33999 | 515 | } |
<> | 149:156823d33999 | 516 | |
<> | 149:156823d33999 | 517 | int serial_writable(serial_t *obj) |
<> | 149:156823d33999 | 518 | { |
<> | 149:156823d33999 | 519 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 520 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 521 | |
<> | 149:156823d33999 | 522 | // Check if data is transmitted |
<> | 149:156823d33999 | 523 | return (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) ? 1 : 0; |
<> | 149:156823d33999 | 524 | } |
<> | 149:156823d33999 | 525 | |
<> | 149:156823d33999 | 526 | void serial_clear(serial_t *obj) |
<> | 149:156823d33999 | 527 | { |
<> | 149:156823d33999 | 528 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 529 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 530 | |
<> | 149:156823d33999 | 531 | huart->TxXferCount = 0; |
<> | 149:156823d33999 | 532 | huart->RxXferCount = 0; |
<> | 149:156823d33999 | 533 | } |
<> | 149:156823d33999 | 534 | |
<> | 149:156823d33999 | 535 | void serial_pinout_tx(PinName tx) |
<> | 149:156823d33999 | 536 | { |
<> | 149:156823d33999 | 537 | pinmap_pinout(tx, PinMap_UART_TX); |
<> | 149:156823d33999 | 538 | } |
<> | 149:156823d33999 | 539 | |
<> | 149:156823d33999 | 540 | void serial_break_set(serial_t *obj) |
<> | 149:156823d33999 | 541 | { |
<> | 149:156823d33999 | 542 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 543 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 544 | |
<> | 149:156823d33999 | 545 | HAL_LIN_SendBreak(huart); |
<> | 149:156823d33999 | 546 | } |
<> | 149:156823d33999 | 547 | |
<> | 149:156823d33999 | 548 | void serial_break_clear(serial_t *obj) |
<> | 149:156823d33999 | 549 | { |
<> | 149:156823d33999 | 550 | (void)obj; |
<> | 149:156823d33999 | 551 | } |
<> | 149:156823d33999 | 552 | |
<> | 149:156823d33999 | 553 | #if DEVICE_SERIAL_ASYNCH |
<> | 149:156823d33999 | 554 | |
<> | 149:156823d33999 | 555 | /****************************************************************************** |
<> | 149:156823d33999 | 556 | * LOCAL HELPER FUNCTIONS |
<> | 149:156823d33999 | 557 | ******************************************************************************/ |
<> | 149:156823d33999 | 558 | |
<> | 149:156823d33999 | 559 | /** |
<> | 149:156823d33999 | 560 | * Configure the TX buffer for an asynchronous write serial transaction |
<> | 149:156823d33999 | 561 | * |
<> | 149:156823d33999 | 562 | * @param obj The serial object. |
<> | 149:156823d33999 | 563 | * @param tx The buffer for sending. |
<> | 149:156823d33999 | 564 | * @param tx_length The number of words to transmit. |
<> | 149:156823d33999 | 565 | */ |
<> | 149:156823d33999 | 566 | static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width) |
<> | 149:156823d33999 | 567 | { |
<> | 149:156823d33999 | 568 | (void)width; |
<> | 149:156823d33999 | 569 | |
<> | 149:156823d33999 | 570 | // Exit if a transmit is already on-going |
<> | 149:156823d33999 | 571 | if (serial_tx_active(obj)) { |
<> | 149:156823d33999 | 572 | return; |
<> | 149:156823d33999 | 573 | } |
<> | 149:156823d33999 | 574 | |
<> | 149:156823d33999 | 575 | obj->tx_buff.buffer = tx; |
<> | 149:156823d33999 | 576 | obj->tx_buff.length = tx_length; |
<> | 149:156823d33999 | 577 | obj->tx_buff.pos = 0; |
<> | 149:156823d33999 | 578 | } |
<> | 149:156823d33999 | 579 | |
<> | 149:156823d33999 | 580 | /** |
<> | 149:156823d33999 | 581 | * Configure the RX buffer for an asynchronous write serial transaction |
<> | 149:156823d33999 | 582 | * |
<> | 149:156823d33999 | 583 | * @param obj The serial object. |
<> | 149:156823d33999 | 584 | * @param tx The buffer for sending. |
<> | 149:156823d33999 | 585 | * @param tx_length The number of words to transmit. |
<> | 149:156823d33999 | 586 | */ |
<> | 149:156823d33999 | 587 | static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width) |
<> | 149:156823d33999 | 588 | { |
<> | 149:156823d33999 | 589 | (void)width; |
<> | 149:156823d33999 | 590 | |
<> | 149:156823d33999 | 591 | // Exit if a reception is already on-going |
<> | 149:156823d33999 | 592 | if (serial_rx_active(obj)) { |
<> | 149:156823d33999 | 593 | return; |
<> | 149:156823d33999 | 594 | } |
<> | 149:156823d33999 | 595 | |
<> | 149:156823d33999 | 596 | obj->rx_buff.buffer = rx; |
<> | 149:156823d33999 | 597 | obj->rx_buff.length = rx_length; |
<> | 149:156823d33999 | 598 | obj->rx_buff.pos = 0; |
<> | 149:156823d33999 | 599 | } |
<> | 149:156823d33999 | 600 | |
<> | 149:156823d33999 | 601 | /** |
<> | 149:156823d33999 | 602 | * Configure events |
<> | 149:156823d33999 | 603 | * |
<> | 149:156823d33999 | 604 | * @param obj The serial object |
<> | 149:156823d33999 | 605 | * @param event The logical OR of the events to configure |
<> | 149:156823d33999 | 606 | * @param enable Set to non-zero to enable events, or zero to disable them |
<> | 149:156823d33999 | 607 | */ |
<> | 149:156823d33999 | 608 | static void serial_enable_event(serial_t *obj, int event, uint8_t enable) |
<> | 149:156823d33999 | 609 | { |
<> | 149:156823d33999 | 610 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 611 | |
<> | 149:156823d33999 | 612 | // Shouldn't have to enable interrupt here, just need to keep track of the requested events. |
<> | 149:156823d33999 | 613 | if (enable) { |
<> | 149:156823d33999 | 614 | obj_s->events |= event; |
<> | 149:156823d33999 | 615 | } else { |
<> | 149:156823d33999 | 616 | obj_s->events &= ~event; |
<> | 149:156823d33999 | 617 | } |
<> | 149:156823d33999 | 618 | } |
<> | 149:156823d33999 | 619 | |
<> | 149:156823d33999 | 620 | |
<> | 149:156823d33999 | 621 | /** |
<> | 149:156823d33999 | 622 | * Get index of serial object TX IRQ, relating it to the physical peripheral. |
<> | 149:156823d33999 | 623 | * |
<> | 149:156823d33999 | 624 | * @param obj pointer to serial object |
<> | 149:156823d33999 | 625 | * @return internal NVIC TX IRQ index of U(S)ART peripheral |
<> | 149:156823d33999 | 626 | */ |
<> | 149:156823d33999 | 627 | static IRQn_Type serial_get_irq_n(serial_t *obj) |
<> | 149:156823d33999 | 628 | { |
<> | 149:156823d33999 | 629 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 630 | IRQn_Type irq_n; |
<> | 149:156823d33999 | 631 | |
<> | 149:156823d33999 | 632 | switch (obj_s->index) { |
<> | 149:156823d33999 | 633 | #if defined(USART1_BASE) |
<> | 149:156823d33999 | 634 | case 0: |
<> | 149:156823d33999 | 635 | irq_n = USART1_IRQn; |
<> | 149:156823d33999 | 636 | break; |
<> | 149:156823d33999 | 637 | #endif |
<> | 149:156823d33999 | 638 | #if defined(USART2_BASE) |
<> | 149:156823d33999 | 639 | case 1: |
<> | 149:156823d33999 | 640 | irq_n = USART2_IRQn; |
<> | 149:156823d33999 | 641 | break; |
<> | 149:156823d33999 | 642 | #endif |
<> | 149:156823d33999 | 643 | #if defined(USART3_BASE) |
<> | 149:156823d33999 | 644 | case 2: |
<> | 149:156823d33999 | 645 | irq_n = USART3_IRQn; |
<> | 149:156823d33999 | 646 | break; |
<> | 149:156823d33999 | 647 | #endif |
<> | 149:156823d33999 | 648 | #if defined(UART4_BASE) |
<> | 149:156823d33999 | 649 | case 3: |
<> | 149:156823d33999 | 650 | irq_n = UART4_IRQn; |
<> | 149:156823d33999 | 651 | break; |
<> | 149:156823d33999 | 652 | #endif |
<> | 149:156823d33999 | 653 | #if defined(UART5_BASE) |
<> | 149:156823d33999 | 654 | case 4: |
<> | 149:156823d33999 | 655 | irq_n = UART5_IRQn; |
<> | 149:156823d33999 | 656 | break; |
<> | 149:156823d33999 | 657 | #endif |
<> | 149:156823d33999 | 658 | #if defined(USART6_BASE) |
<> | 149:156823d33999 | 659 | case 5: |
<> | 149:156823d33999 | 660 | irq_n = USART6_IRQn; |
<> | 149:156823d33999 | 661 | break; |
<> | 149:156823d33999 | 662 | #endif |
<> | 149:156823d33999 | 663 | #if defined(UART7_BASE) |
<> | 149:156823d33999 | 664 | case 6: |
<> | 149:156823d33999 | 665 | irq_n = UART7_IRQn; |
<> | 149:156823d33999 | 666 | break; |
<> | 149:156823d33999 | 667 | #endif |
<> | 149:156823d33999 | 668 | #if defined(UART8_BASE) |
<> | 149:156823d33999 | 669 | case 7: |
<> | 149:156823d33999 | 670 | irq_n = UART8_IRQn; |
<> | 149:156823d33999 | 671 | break; |
<> | 149:156823d33999 | 672 | #endif |
<> | 149:156823d33999 | 673 | default: |
<> | 149:156823d33999 | 674 | irq_n = (IRQn_Type)0; |
<> | 149:156823d33999 | 675 | } |
<> | 149:156823d33999 | 676 | |
<> | 149:156823d33999 | 677 | return irq_n; |
<> | 149:156823d33999 | 678 | } |
<> | 149:156823d33999 | 679 | |
<> | 149:156823d33999 | 680 | |
<> | 149:156823d33999 | 681 | /****************************************************************************** |
<> | 149:156823d33999 | 682 | * MBED API FUNCTIONS |
<> | 149:156823d33999 | 683 | ******************************************************************************/ |
<> | 149:156823d33999 | 684 | |
<> | 149:156823d33999 | 685 | /** |
<> | 149:156823d33999 | 686 | * Begin asynchronous TX transfer. The used buffer is specified in the serial |
<> | 149:156823d33999 | 687 | * object, tx_buff |
<> | 149:156823d33999 | 688 | * |
<> | 149:156823d33999 | 689 | * @param obj The serial object |
<> | 149:156823d33999 | 690 | * @param tx The buffer for sending |
<> | 149:156823d33999 | 691 | * @param tx_length The number of words to transmit |
<> | 149:156823d33999 | 692 | * @param tx_width The bit width of buffer word |
<> | 149:156823d33999 | 693 | * @param handler The serial handler |
<> | 149:156823d33999 | 694 | * @param event The logical OR of events to be registered |
<> | 149:156823d33999 | 695 | * @param hint A suggestion for how to use DMA with this transfer |
<> | 149:156823d33999 | 696 | * @return Returns number of data transfered, or 0 otherwise |
<> | 149:156823d33999 | 697 | */ |
<> | 149:156823d33999 | 698 | 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) |
<> | 149:156823d33999 | 699 | { |
<> | 149:156823d33999 | 700 | // TODO: DMA usage is currently ignored |
<> | 149:156823d33999 | 701 | (void) hint; |
<> | 149:156823d33999 | 702 | |
<> | 149:156823d33999 | 703 | // Check buffer is ok |
<> | 149:156823d33999 | 704 | MBED_ASSERT(tx != (void*)0); |
<> | 149:156823d33999 | 705 | MBED_ASSERT(tx_width == 8); // support only 8b width |
<> | 149:156823d33999 | 706 | |
<> | 149:156823d33999 | 707 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 708 | UART_HandleTypeDef * huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 709 | |
<> | 149:156823d33999 | 710 | if (tx_length == 0) { |
<> | 149:156823d33999 | 711 | return 0; |
<> | 149:156823d33999 | 712 | } |
<> | 149:156823d33999 | 713 | |
<> | 149:156823d33999 | 714 | // Set up buffer |
<> | 149:156823d33999 | 715 | serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width); |
<> | 149:156823d33999 | 716 | |
<> | 149:156823d33999 | 717 | // Set up events |
<> | 149:156823d33999 | 718 | serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events |
<> | 149:156823d33999 | 719 | serial_enable_event(obj, event, 1); // Set only the wanted events |
<> | 149:156823d33999 | 720 | |
<> | 149:156823d33999 | 721 | // Enable interrupt |
<> | 149:156823d33999 | 722 | IRQn_Type irq_n = serial_get_irq_n(obj); |
<> | 149:156823d33999 | 723 | NVIC_ClearPendingIRQ(irq_n); |
<> | 149:156823d33999 | 724 | NVIC_DisableIRQ(irq_n); |
<> | 149:156823d33999 | 725 | NVIC_SetPriority(irq_n, 1); |
<> | 149:156823d33999 | 726 | NVIC_SetVector(irq_n, (uint32_t)handler); |
<> | 149:156823d33999 | 727 | NVIC_EnableIRQ(irq_n); |
<> | 149:156823d33999 | 728 | |
<> | 149:156823d33999 | 729 | // the following function will enable UART_IT_TXE and error interrupts |
<> | 149:156823d33999 | 730 | if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) { |
<> | 149:156823d33999 | 731 | return 0; |
<> | 149:156823d33999 | 732 | } |
<> | 149:156823d33999 | 733 | |
<> | 149:156823d33999 | 734 | return tx_length; |
<> | 149:156823d33999 | 735 | } |
<> | 149:156823d33999 | 736 | |
<> | 149:156823d33999 | 737 | /** |
<> | 149:156823d33999 | 738 | * Begin asynchronous RX transfer (enable interrupt for data collecting) |
<> | 149:156823d33999 | 739 | * The used buffer is specified in the serial object, rx_buff |
<> | 149:156823d33999 | 740 | * |
<> | 149:156823d33999 | 741 | * @param obj The serial object |
<> | 149:156823d33999 | 742 | * @param rx The buffer for sending |
<> | 149:156823d33999 | 743 | * @param rx_length The number of words to transmit |
<> | 149:156823d33999 | 744 | * @param rx_width The bit width of buffer word |
<> | 149:156823d33999 | 745 | * @param handler The serial handler |
<> | 149:156823d33999 | 746 | * @param event The logical OR of events to be registered |
<> | 149:156823d33999 | 747 | * @param handler The serial handler |
<> | 149:156823d33999 | 748 | * @param char_match A character in range 0-254 to be matched |
<> | 149:156823d33999 | 749 | * @param hint A suggestion for how to use DMA with this transfer |
<> | 149:156823d33999 | 750 | */ |
<> | 149:156823d33999 | 751 | 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) |
<> | 149:156823d33999 | 752 | { |
<> | 149:156823d33999 | 753 | // TODO: DMA usage is currently ignored |
<> | 149:156823d33999 | 754 | (void) hint; |
<> | 149:156823d33999 | 755 | |
<> | 149:156823d33999 | 756 | /* Sanity check arguments */ |
<> | 149:156823d33999 | 757 | MBED_ASSERT(obj); |
<> | 149:156823d33999 | 758 | MBED_ASSERT(rx != (void*)0); |
<> | 149:156823d33999 | 759 | MBED_ASSERT(rx_width == 8); // support only 8b width |
<> | 149:156823d33999 | 760 | |
<> | 149:156823d33999 | 761 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 762 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 763 | |
<> | 149:156823d33999 | 764 | serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0); |
<> | 149:156823d33999 | 765 | serial_enable_event(obj, event, 1); |
<> | 149:156823d33999 | 766 | |
<> | 149:156823d33999 | 767 | // set CharMatch |
<> | 149:156823d33999 | 768 | obj->char_match = char_match; |
<> | 149:156823d33999 | 769 | |
<> | 149:156823d33999 | 770 | serial_rx_buffer_set(obj, rx, rx_length, rx_width); |
<> | 149:156823d33999 | 771 | |
<> | 149:156823d33999 | 772 | IRQn_Type irq_n = serial_get_irq_n(obj); |
<> | 149:156823d33999 | 773 | NVIC_ClearPendingIRQ(irq_n); |
<> | 149:156823d33999 | 774 | NVIC_DisableIRQ(irq_n); |
<> | 149:156823d33999 | 775 | NVIC_SetPriority(irq_n, 0); |
<> | 149:156823d33999 | 776 | NVIC_SetVector(irq_n, (uint32_t)handler); |
<> | 149:156823d33999 | 777 | NVIC_EnableIRQ(irq_n); |
<> | 149:156823d33999 | 778 | |
<> | 149:156823d33999 | 779 | // following HAL function will enable the RXNE interrupt + error interrupts |
<> | 149:156823d33999 | 780 | HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length); |
<> | 149:156823d33999 | 781 | } |
<> | 149:156823d33999 | 782 | |
<> | 149:156823d33999 | 783 | /** |
<> | 149:156823d33999 | 784 | * Attempts to determine if the serial peripheral is already in use for TX |
<> | 149:156823d33999 | 785 | * |
<> | 149:156823d33999 | 786 | * @param obj The serial object |
<> | 149:156823d33999 | 787 | * @return Non-zero if the TX transaction is ongoing, 0 otherwise |
<> | 149:156823d33999 | 788 | */ |
<> | 149:156823d33999 | 789 | uint8_t serial_tx_active(serial_t *obj) |
<> | 149:156823d33999 | 790 | { |
<> | 149:156823d33999 | 791 | MBED_ASSERT(obj); |
<> | 149:156823d33999 | 792 | |
<> | 149:156823d33999 | 793 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 794 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 795 | |
<> | 149:156823d33999 | 796 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0); |
<> | 149:156823d33999 | 797 | } |
<> | 149:156823d33999 | 798 | |
<> | 149:156823d33999 | 799 | /** |
<> | 149:156823d33999 | 800 | * Attempts to determine if the serial peripheral is already in use for RX |
<> | 149:156823d33999 | 801 | * |
<> | 149:156823d33999 | 802 | * @param obj The serial object |
<> | 149:156823d33999 | 803 | * @return Non-zero if the RX transaction is ongoing, 0 otherwise |
<> | 149:156823d33999 | 804 | */ |
<> | 149:156823d33999 | 805 | uint8_t serial_rx_active(serial_t *obj) |
<> | 149:156823d33999 | 806 | { |
<> | 149:156823d33999 | 807 | MBED_ASSERT(obj); |
<> | 149:156823d33999 | 808 | |
<> | 149:156823d33999 | 809 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 810 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 811 | |
<> | 149:156823d33999 | 812 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0); |
<> | 149:156823d33999 | 813 | } |
<> | 149:156823d33999 | 814 | |
<> | 149:156823d33999 | 815 | void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) { |
<> | 149:156823d33999 | 816 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
<> | 149:156823d33999 | 817 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
<> | 149:156823d33999 | 818 | } |
<> | 149:156823d33999 | 819 | } |
<> | 149:156823d33999 | 820 | |
<> | 149:156823d33999 | 821 | void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) { |
<> | 149:156823d33999 | 822 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
<> | 149:156823d33999 | 823 | volatile uint32_t tmpval = huart->Instance->DR; // Clear PE flag |
<> | 149:156823d33999 | 824 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
<> | 149:156823d33999 | 825 | volatile uint32_t tmpval = huart->Instance->DR; // Clear FE flag |
<> | 149:156823d33999 | 826 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) { |
<> | 149:156823d33999 | 827 | volatile uint32_t tmpval = huart->Instance->DR; // Clear NE flag |
<> | 149:156823d33999 | 828 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
<> | 149:156823d33999 | 829 | volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag |
<> | 149:156823d33999 | 830 | } |
<> | 149:156823d33999 | 831 | } |
<> | 149:156823d33999 | 832 | |
<> | 149:156823d33999 | 833 | /** |
<> | 149:156823d33999 | 834 | * The asynchronous TX and RX handler. |
<> | 149:156823d33999 | 835 | * |
<> | 149:156823d33999 | 836 | * @param obj The serial object |
<> | 149:156823d33999 | 837 | * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise |
<> | 149:156823d33999 | 838 | */ |
<> | 149:156823d33999 | 839 | int serial_irq_handler_asynch(serial_t *obj) |
<> | 149:156823d33999 | 840 | { |
<> | 149:156823d33999 | 841 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 842 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 843 | |
<> | 149:156823d33999 | 844 | volatile int return_event = 0; |
<> | 149:156823d33999 | 845 | uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer); |
<> | 149:156823d33999 | 846 | uint8_t i = 0; |
<> | 149:156823d33999 | 847 | |
<> | 149:156823d33999 | 848 | // TX PART: |
<> | 149:156823d33999 | 849 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
<> | 149:156823d33999 | 850 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) { |
<> | 149:156823d33999 | 851 | // Return event SERIAL_EVENT_TX_COMPLETE if requested |
<> | 149:156823d33999 | 852 | if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) { |
<> | 149:156823d33999 | 853 | return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events); |
<> | 149:156823d33999 | 854 | } |
<> | 149:156823d33999 | 855 | } |
<> | 149:156823d33999 | 856 | } |
<> | 149:156823d33999 | 857 | |
<> | 149:156823d33999 | 858 | // Handle error events |
<> | 149:156823d33999 | 859 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
<> | 149:156823d33999 | 860 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
<> | 149:156823d33999 | 861 | return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events); |
<> | 149:156823d33999 | 862 | } |
<> | 149:156823d33999 | 863 | } |
<> | 149:156823d33999 | 864 | |
<> | 149:156823d33999 | 865 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
<> | 149:156823d33999 | 866 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
<> | 149:156823d33999 | 867 | return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events); |
<> | 149:156823d33999 | 868 | } |
<> | 149:156823d33999 | 869 | } |
<> | 149:156823d33999 | 870 | |
<> | 149:156823d33999 | 871 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
<> | 149:156823d33999 | 872 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
<> | 149:156823d33999 | 873 | return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events); |
<> | 149:156823d33999 | 874 | } |
<> | 149:156823d33999 | 875 | } |
<> | 149:156823d33999 | 876 | |
<> | 149:156823d33999 | 877 | HAL_UART_IRQHandler(huart); |
<> | 149:156823d33999 | 878 | |
<> | 149:156823d33999 | 879 | // Abort if an error occurs |
<> | 149:156823d33999 | 880 | if (return_event & SERIAL_EVENT_RX_PARITY_ERROR || |
<> | 149:156823d33999 | 881 | return_event & SERIAL_EVENT_RX_FRAMING_ERROR || |
<> | 149:156823d33999 | 882 | return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) { |
<> | 149:156823d33999 | 883 | return return_event; |
<> | 149:156823d33999 | 884 | } |
<> | 149:156823d33999 | 885 | |
<> | 149:156823d33999 | 886 | //RX PART |
<> | 149:156823d33999 | 887 | if (huart->RxXferSize != 0) { |
<> | 149:156823d33999 | 888 | obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount; |
<> | 149:156823d33999 | 889 | } |
<> | 149:156823d33999 | 890 | if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) { |
<> | 149:156823d33999 | 891 | return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events); |
<> | 149:156823d33999 | 892 | } |
<> | 149:156823d33999 | 893 | |
<> | 149:156823d33999 | 894 | // Check if char_match is present |
<> | 149:156823d33999 | 895 | if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) { |
<> | 149:156823d33999 | 896 | if (buf != NULL) { |
<> | 149:156823d33999 | 897 | for (i = 0; i < obj->rx_buff.pos; i++) { |
<> | 149:156823d33999 | 898 | if (buf[i] == obj->char_match) { |
<> | 149:156823d33999 | 899 | obj->rx_buff.pos = i; |
<> | 149:156823d33999 | 900 | return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events); |
<> | 149:156823d33999 | 901 | serial_rx_abort_asynch(obj); |
<> | 149:156823d33999 | 902 | break; |
<> | 149:156823d33999 | 903 | } |
<> | 149:156823d33999 | 904 | } |
<> | 149:156823d33999 | 905 | } |
<> | 149:156823d33999 | 906 | } |
<> | 149:156823d33999 | 907 | |
<> | 149:156823d33999 | 908 | return return_event; |
<> | 149:156823d33999 | 909 | } |
<> | 149:156823d33999 | 910 | |
<> | 149:156823d33999 | 911 | /** |
<> | 149:156823d33999 | 912 | * Abort the ongoing TX transaction. It disables the enabled interupt for TX and |
<> | 149:156823d33999 | 913 | * flush TX hardware buffer if TX FIFO is used |
<> | 149:156823d33999 | 914 | * |
<> | 149:156823d33999 | 915 | * @param obj The serial object |
<> | 149:156823d33999 | 916 | */ |
<> | 149:156823d33999 | 917 | void serial_tx_abort_asynch(serial_t *obj) |
<> | 149:156823d33999 | 918 | { |
<> | 149:156823d33999 | 919 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 920 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 921 | |
<> | 149:156823d33999 | 922 | __HAL_UART_DISABLE_IT(huart, UART_IT_TC); |
<> | 149:156823d33999 | 923 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
<> | 149:156823d33999 | 924 | |
<> | 149:156823d33999 | 925 | // clear flags |
<> | 149:156823d33999 | 926 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
<> | 149:156823d33999 | 927 | |
<> | 149:156823d33999 | 928 | // reset states |
<> | 149:156823d33999 | 929 | huart->TxXferCount = 0; |
<> | 149:156823d33999 | 930 | // update handle state |
<> | 149:156823d33999 | 931 | if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) { |
<> | 149:156823d33999 | 932 | huart->gState = HAL_UART_STATE_BUSY_RX; |
<> | 149:156823d33999 | 933 | } else { |
<> | 149:156823d33999 | 934 | huart->gState = HAL_UART_STATE_READY; |
<> | 149:156823d33999 | 935 | } |
<> | 149:156823d33999 | 936 | } |
<> | 149:156823d33999 | 937 | |
<> | 149:156823d33999 | 938 | /** |
<> | 149:156823d33999 | 939 | * Abort the ongoing RX transaction It disables the enabled interrupt for RX and |
<> | 149:156823d33999 | 940 | * flush RX hardware buffer if RX FIFO is used |
<> | 149:156823d33999 | 941 | * |
<> | 149:156823d33999 | 942 | * @param obj The serial object |
<> | 149:156823d33999 | 943 | */ |
<> | 149:156823d33999 | 944 | void serial_rx_abort_asynch(serial_t *obj) |
<> | 149:156823d33999 | 945 | { |
<> | 149:156823d33999 | 946 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 947 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
<> | 149:156823d33999 | 948 | |
<> | 149:156823d33999 | 949 | // disable interrupts |
<> | 149:156823d33999 | 950 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
<> | 149:156823d33999 | 951 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE); |
<> | 149:156823d33999 | 952 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR); |
<> | 149:156823d33999 | 953 | |
<> | 149:156823d33999 | 954 | // clear flags |
<> | 149:156823d33999 | 955 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE); |
<> | 149:156823d33999 | 956 | volatile uint32_t tmpval = huart->Instance->DR; // Clear error flags |
<> | 149:156823d33999 | 957 | |
<> | 149:156823d33999 | 958 | // reset states |
<> | 149:156823d33999 | 959 | huart->RxXferCount = 0; |
<> | 149:156823d33999 | 960 | // update handle state |
<> | 149:156823d33999 | 961 | if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) { |
<> | 149:156823d33999 | 962 | huart->RxState = HAL_UART_STATE_BUSY_TX; |
<> | 149:156823d33999 | 963 | } else { |
<> | 149:156823d33999 | 964 | huart->RxState = HAL_UART_STATE_READY; |
<> | 149:156823d33999 | 965 | } |
<> | 149:156823d33999 | 966 | } |
<> | 149:156823d33999 | 967 | |
<> | 149:156823d33999 | 968 | #endif |
<> | 149:156823d33999 | 969 | |
<> | 149:156823d33999 | 970 | #if DEVICE_SERIAL_FC |
<> | 149:156823d33999 | 971 | |
<> | 149:156823d33999 | 972 | /** |
<> | 149:156823d33999 | 973 | * Set HW Control Flow |
<> | 149:156823d33999 | 974 | * @param obj The serial object |
<> | 149:156823d33999 | 975 | * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS) |
<> | 149:156823d33999 | 976 | * @param rxflow Pin for the rxflow |
<> | 149:156823d33999 | 977 | * @param txflow Pin for the txflow |
<> | 149:156823d33999 | 978 | */ |
<> | 149:156823d33999 | 979 | void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) |
<> | 149:156823d33999 | 980 | { |
<> | 149:156823d33999 | 981 | struct serial_s *obj_s = SERIAL_S(obj); |
<> | 149:156823d33999 | 982 | |
<> | 149:156823d33999 | 983 | // Determine the UART to use (UART_1, UART_2, ...) |
<> | 149:156823d33999 | 984 | UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS); |
<> | 149:156823d33999 | 985 | UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS); |
<> | 149:156823d33999 | 986 | |
<> | 149:156823d33999 | 987 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
<> | 149:156823d33999 | 988 | obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts); |
<> | 149:156823d33999 | 989 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
<> | 149:156823d33999 | 990 | |
<> | 149:156823d33999 | 991 | if(type == FlowControlNone) { |
<> | 149:156823d33999 | 992 | // Disable hardware flow control |
<> | 149:156823d33999 | 993 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
<> | 149:156823d33999 | 994 | } |
<> | 149:156823d33999 | 995 | if (type == FlowControlRTS) { |
<> | 149:156823d33999 | 996 | // Enable RTS |
<> | 149:156823d33999 | 997 | MBED_ASSERT(uart_rts != (UARTName)NC); |
<> | 149:156823d33999 | 998 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS; |
<> | 149:156823d33999 | 999 | obj_s->pin_rts = rxflow; |
<> | 149:156823d33999 | 1000 | // Enable the pin for RTS function |
<> | 149:156823d33999 | 1001 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
<> | 149:156823d33999 | 1002 | } |
<> | 149:156823d33999 | 1003 | if (type == FlowControlCTS) { |
<> | 149:156823d33999 | 1004 | // Enable CTS |
<> | 149:156823d33999 | 1005 | MBED_ASSERT(uart_cts != (UARTName)NC); |
<> | 149:156823d33999 | 1006 | obj_s->hw_flow_ctl = UART_HWCONTROL_CTS; |
<> | 149:156823d33999 | 1007 | obj_s->pin_cts = txflow; |
<> | 149:156823d33999 | 1008 | // Enable the pin for CTS function |
<> | 149:156823d33999 | 1009 | pinmap_pinout(txflow, PinMap_UART_CTS); |
<> | 149:156823d33999 | 1010 | } |
<> | 149:156823d33999 | 1011 | if (type == FlowControlRTSCTS) { |
<> | 149:156823d33999 | 1012 | // Enable CTS & RTS |
<> | 149:156823d33999 | 1013 | MBED_ASSERT(uart_rts != (UARTName)NC); |
<> | 149:156823d33999 | 1014 | MBED_ASSERT(uart_cts != (UARTName)NC); |
<> | 149:156823d33999 | 1015 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS; |
<> | 149:156823d33999 | 1016 | obj_s->pin_rts = rxflow; |
<> | 149:156823d33999 | 1017 | obj_s->pin_cts = txflow; |
<> | 149:156823d33999 | 1018 | // Enable the pin for CTS function |
<> | 149:156823d33999 | 1019 | pinmap_pinout(txflow, PinMap_UART_CTS); |
<> | 149:156823d33999 | 1020 | // Enable the pin for RTS function |
<> | 149:156823d33999 | 1021 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
<> | 149:156823d33999 | 1022 | } |
<> | 149:156823d33999 | 1023 | |
<> | 149:156823d33999 | 1024 | init_uart(obj); |
<> | 149:156823d33999 | 1025 | } |
<> | 149:156823d33999 | 1026 | |
<> | 149:156823d33999 | 1027 | #endif |
<> | 149:156823d33999 | 1028 | |
<> | 149:156823d33999 | 1029 | #endif |