mbed-os
Dependents: cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more
targets/TARGET_STM/TARGET_STM32L1/serial_device.c@0:b74591d5ab33, 2017-12-11 (annotated)
- Committer:
- be_bryan
- Date:
- Mon Dec 11 17:54:04 2017 +0000
- Revision:
- 0:b74591d5ab33
motor ++
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| be_bryan | 0:b74591d5ab33 | 1 | /* mbed Microcontroller Library |
| be_bryan | 0:b74591d5ab33 | 2 | ******************************************************************************* |
| be_bryan | 0:b74591d5ab33 | 3 | * Copyright (c) 2014, STMicroelectronics |
| be_bryan | 0:b74591d5ab33 | 4 | * All rights reserved. |
| be_bryan | 0:b74591d5ab33 | 5 | * |
| be_bryan | 0:b74591d5ab33 | 6 | * Redistribution and use in source and binary forms, with or without |
| be_bryan | 0:b74591d5ab33 | 7 | * modification, are permitted provided that the following conditions are met: |
| be_bryan | 0:b74591d5ab33 | 8 | * |
| be_bryan | 0:b74591d5ab33 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
| be_bryan | 0:b74591d5ab33 | 10 | * this list of conditions and the following disclaimer. |
| be_bryan | 0:b74591d5ab33 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| be_bryan | 0:b74591d5ab33 | 12 | * this list of conditions and the following disclaimer in the documentation |
| be_bryan | 0:b74591d5ab33 | 13 | * and/or other materials provided with the distribution. |
| be_bryan | 0:b74591d5ab33 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| be_bryan | 0:b74591d5ab33 | 15 | * may be used to endorse or promote products derived from this software |
| be_bryan | 0:b74591d5ab33 | 16 | * without specific prior written permission. |
| be_bryan | 0:b74591d5ab33 | 17 | * |
| be_bryan | 0:b74591d5ab33 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| be_bryan | 0:b74591d5ab33 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| be_bryan | 0:b74591d5ab33 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| be_bryan | 0:b74591d5ab33 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| be_bryan | 0:b74591d5ab33 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| be_bryan | 0:b74591d5ab33 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| be_bryan | 0:b74591d5ab33 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| be_bryan | 0:b74591d5ab33 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| be_bryan | 0:b74591d5ab33 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| be_bryan | 0:b74591d5ab33 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| be_bryan | 0:b74591d5ab33 | 28 | ******************************************************************************* |
| be_bryan | 0:b74591d5ab33 | 29 | */ |
| be_bryan | 0:b74591d5ab33 | 30 | #include "mbed_assert.h" |
| be_bryan | 0:b74591d5ab33 | 31 | #include "serial_api.h" |
| be_bryan | 0:b74591d5ab33 | 32 | #include "serial_api_hal.h" |
| be_bryan | 0:b74591d5ab33 | 33 | |
| be_bryan | 0:b74591d5ab33 | 34 | #if DEVICE_SERIAL |
| be_bryan | 0:b74591d5ab33 | 35 | |
| be_bryan | 0:b74591d5ab33 | 36 | #include "cmsis.h" |
| be_bryan | 0:b74591d5ab33 | 37 | #include "pinmap.h" |
| be_bryan | 0:b74591d5ab33 | 38 | #include "mbed_error.h" |
| be_bryan | 0:b74591d5ab33 | 39 | #include <string.h> |
| be_bryan | 0:b74591d5ab33 | 40 | #include "PeripheralPins.h" |
| be_bryan | 0:b74591d5ab33 | 41 | |
| be_bryan | 0:b74591d5ab33 | 42 | #define UART_NUM (5) |
| be_bryan | 0:b74591d5ab33 | 43 | |
| be_bryan | 0:b74591d5ab33 | 44 | static uint32_t serial_irq_ids[UART_NUM] = {0}; |
| be_bryan | 0:b74591d5ab33 | 45 | UART_HandleTypeDef uart_handlers[UART_NUM]; |
| be_bryan | 0:b74591d5ab33 | 46 | |
| be_bryan | 0:b74591d5ab33 | 47 | static uart_irq_handler irq_handler; |
| be_bryan | 0:b74591d5ab33 | 48 | |
| be_bryan | 0:b74591d5ab33 | 49 | int stdio_uart_inited = 0; |
| be_bryan | 0:b74591d5ab33 | 50 | serial_t stdio_uart; |
| be_bryan | 0:b74591d5ab33 | 51 | |
| be_bryan | 0:b74591d5ab33 | 52 | void serial_init(serial_t *obj, PinName tx, PinName rx) |
| be_bryan | 0:b74591d5ab33 | 53 | { |
| be_bryan | 0:b74591d5ab33 | 54 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 55 | |
| be_bryan | 0:b74591d5ab33 | 56 | // Determine the UART to use (UART_1, UART_2, ...) |
| be_bryan | 0:b74591d5ab33 | 57 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
| be_bryan | 0:b74591d5ab33 | 58 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
| be_bryan | 0:b74591d5ab33 | 59 | |
| be_bryan | 0:b74591d5ab33 | 60 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
| be_bryan | 0:b74591d5ab33 | 61 | obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
| be_bryan | 0:b74591d5ab33 | 62 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 63 | |
| be_bryan | 0:b74591d5ab33 | 64 | // Enable USART clock |
| be_bryan | 0:b74591d5ab33 | 65 | if (obj_s->uart == UART_1) { |
| be_bryan | 0:b74591d5ab33 | 66 | __HAL_RCC_USART1_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 67 | __HAL_RCC_USART1_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 68 | __HAL_RCC_USART1_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 69 | obj_s->index = 0; |
| be_bryan | 0:b74591d5ab33 | 70 | } |
| be_bryan | 0:b74591d5ab33 | 71 | if (obj_s->uart == UART_2) { |
| be_bryan | 0:b74591d5ab33 | 72 | __HAL_RCC_USART2_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 73 | __HAL_RCC_USART2_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 74 | __HAL_RCC_USART2_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 75 | obj_s->index = 1; |
| be_bryan | 0:b74591d5ab33 | 76 | } |
| be_bryan | 0:b74591d5ab33 | 77 | if (obj_s->uart == UART_3) { |
| be_bryan | 0:b74591d5ab33 | 78 | __HAL_RCC_USART3_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 79 | __HAL_RCC_USART3_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 80 | __HAL_RCC_USART3_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 81 | obj_s->index = 2; |
| be_bryan | 0:b74591d5ab33 | 82 | } |
| be_bryan | 0:b74591d5ab33 | 83 | #if defined(UART4_BASE) |
| be_bryan | 0:b74591d5ab33 | 84 | if (obj_s->uart == UART_4) { |
| be_bryan | 0:b74591d5ab33 | 85 | __HAL_RCC_UART4_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 86 | __HAL_RCC_UART4_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 87 | __HAL_RCC_UART4_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 88 | obj_s->index = 3; |
| be_bryan | 0:b74591d5ab33 | 89 | } |
| be_bryan | 0:b74591d5ab33 | 90 | #endif |
| be_bryan | 0:b74591d5ab33 | 91 | #if defined(UART5_BASE) |
| be_bryan | 0:b74591d5ab33 | 92 | if (obj_s->uart == UART_5) { |
| be_bryan | 0:b74591d5ab33 | 93 | __HAL_RCC_UART5_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 94 | __HAL_RCC_UART5_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 95 | __HAL_RCC_UART5_CLK_ENABLE(); |
| be_bryan | 0:b74591d5ab33 | 96 | obj_s->index = 4; |
| be_bryan | 0:b74591d5ab33 | 97 | } |
| be_bryan | 0:b74591d5ab33 | 98 | #endif |
| be_bryan | 0:b74591d5ab33 | 99 | |
| be_bryan | 0:b74591d5ab33 | 100 | // Configure UART pins |
| be_bryan | 0:b74591d5ab33 | 101 | pinmap_pinout(tx, PinMap_UART_TX); |
| be_bryan | 0:b74591d5ab33 | 102 | pinmap_pinout(rx, PinMap_UART_RX); |
| be_bryan | 0:b74591d5ab33 | 103 | |
| be_bryan | 0:b74591d5ab33 | 104 | if (tx != NC) { |
| be_bryan | 0:b74591d5ab33 | 105 | pin_mode(tx, PullUp); |
| be_bryan | 0:b74591d5ab33 | 106 | } |
| be_bryan | 0:b74591d5ab33 | 107 | if (rx != NC) { |
| be_bryan | 0:b74591d5ab33 | 108 | pin_mode(rx, PullUp); |
| be_bryan | 0:b74591d5ab33 | 109 | } |
| be_bryan | 0:b74591d5ab33 | 110 | |
| be_bryan | 0:b74591d5ab33 | 111 | // Configure UART |
| be_bryan | 0:b74591d5ab33 | 112 | obj_s->baudrate = 9600; |
| be_bryan | 0:b74591d5ab33 | 113 | obj_s->databits = UART_WORDLENGTH_8B; |
| be_bryan | 0:b74591d5ab33 | 114 | obj_s->stopbits = UART_STOPBITS_1; |
| be_bryan | 0:b74591d5ab33 | 115 | obj_s->parity = UART_PARITY_NONE; |
| be_bryan | 0:b74591d5ab33 | 116 | |
| be_bryan | 0:b74591d5ab33 | 117 | #if DEVICE_SERIAL_FC |
| be_bryan | 0:b74591d5ab33 | 118 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
| be_bryan | 0:b74591d5ab33 | 119 | #endif |
| be_bryan | 0:b74591d5ab33 | 120 | |
| be_bryan | 0:b74591d5ab33 | 121 | obj_s->pin_tx = tx; |
| be_bryan | 0:b74591d5ab33 | 122 | obj_s->pin_rx = rx; |
| be_bryan | 0:b74591d5ab33 | 123 | |
| be_bryan | 0:b74591d5ab33 | 124 | init_uart(obj); |
| be_bryan | 0:b74591d5ab33 | 125 | |
| be_bryan | 0:b74591d5ab33 | 126 | // For stdio management |
| be_bryan | 0:b74591d5ab33 | 127 | if (obj_s->uart == STDIO_UART) { |
| be_bryan | 0:b74591d5ab33 | 128 | stdio_uart_inited = 1; |
| be_bryan | 0:b74591d5ab33 | 129 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
| be_bryan | 0:b74591d5ab33 | 130 | } |
| be_bryan | 0:b74591d5ab33 | 131 | } |
| be_bryan | 0:b74591d5ab33 | 132 | |
| be_bryan | 0:b74591d5ab33 | 133 | void serial_free(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 134 | { |
| be_bryan | 0:b74591d5ab33 | 135 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 136 | |
| be_bryan | 0:b74591d5ab33 | 137 | // Reset UART and disable clock |
| be_bryan | 0:b74591d5ab33 | 138 | if (obj_s->uart == UART_1) { |
| be_bryan | 0:b74591d5ab33 | 139 | __USART1_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 140 | __USART1_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 141 | __USART1_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 142 | } |
| be_bryan | 0:b74591d5ab33 | 143 | if (obj_s->uart == UART_2) { |
| be_bryan | 0:b74591d5ab33 | 144 | __USART2_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 145 | __USART2_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 146 | __USART2_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 147 | } |
| be_bryan | 0:b74591d5ab33 | 148 | if (obj_s->uart == UART_3) { |
| be_bryan | 0:b74591d5ab33 | 149 | __USART3_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 150 | __USART3_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 151 | __USART3_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 152 | } |
| be_bryan | 0:b74591d5ab33 | 153 | |
| be_bryan | 0:b74591d5ab33 | 154 | #if defined(UART4_BASE) |
| be_bryan | 0:b74591d5ab33 | 155 | if (obj_s->uart == UART_4) { |
| be_bryan | 0:b74591d5ab33 | 156 | __UART4_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 157 | __UART4_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 158 | __UART4_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 159 | } |
| be_bryan | 0:b74591d5ab33 | 160 | #endif |
| be_bryan | 0:b74591d5ab33 | 161 | #if defined(UART5_BASE) |
| be_bryan | 0:b74591d5ab33 | 162 | if (obj_s->uart == UART_5) { |
| be_bryan | 0:b74591d5ab33 | 163 | __UART5_FORCE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 164 | __UART5_RELEASE_RESET(); |
| be_bryan | 0:b74591d5ab33 | 165 | __UART5_CLK_DISABLE(); |
| be_bryan | 0:b74591d5ab33 | 166 | } |
| be_bryan | 0:b74591d5ab33 | 167 | #endif |
| be_bryan | 0:b74591d5ab33 | 168 | |
| be_bryan | 0:b74591d5ab33 | 169 | // Configure GPIOs |
| be_bryan | 0:b74591d5ab33 | 170 | pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
| be_bryan | 0:b74591d5ab33 | 171 | pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
| be_bryan | 0:b74591d5ab33 | 172 | |
| be_bryan | 0:b74591d5ab33 | 173 | serial_irq_ids[obj_s->index] = 0; |
| be_bryan | 0:b74591d5ab33 | 174 | } |
| be_bryan | 0:b74591d5ab33 | 175 | |
| be_bryan | 0:b74591d5ab33 | 176 | void serial_baud(serial_t *obj, int baudrate) |
| be_bryan | 0:b74591d5ab33 | 177 | { |
| be_bryan | 0:b74591d5ab33 | 178 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 179 | |
| be_bryan | 0:b74591d5ab33 | 180 | obj_s->baudrate = baudrate; |
| be_bryan | 0:b74591d5ab33 | 181 | init_uart(obj); |
| be_bryan | 0:b74591d5ab33 | 182 | } |
| be_bryan | 0:b74591d5ab33 | 183 | |
| be_bryan | 0:b74591d5ab33 | 184 | /****************************************************************************** |
| be_bryan | 0:b74591d5ab33 | 185 | * INTERRUPTS HANDLING |
| be_bryan | 0:b74591d5ab33 | 186 | ******************************************************************************/ |
| be_bryan | 0:b74591d5ab33 | 187 | |
| be_bryan | 0:b74591d5ab33 | 188 | static void uart_irq(int id) |
| be_bryan | 0:b74591d5ab33 | 189 | { |
| be_bryan | 0:b74591d5ab33 | 190 | UART_HandleTypeDef * huart = &uart_handlers[id]; |
| be_bryan | 0:b74591d5ab33 | 191 | |
| be_bryan | 0:b74591d5ab33 | 192 | if (serial_irq_ids[id] != 0) { |
| be_bryan | 0:b74591d5ab33 | 193 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 194 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 195 | irq_handler(serial_irq_ids[id], TxIrq); |
| be_bryan | 0:b74591d5ab33 | 196 | } |
| be_bryan | 0:b74591d5ab33 | 197 | } |
| be_bryan | 0:b74591d5ab33 | 198 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 199 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 200 | irq_handler(serial_irq_ids[id], RxIrq); |
| be_bryan | 0:b74591d5ab33 | 201 | /* Flag has been cleared when reading the content */ |
| be_bryan | 0:b74591d5ab33 | 202 | } |
| be_bryan | 0:b74591d5ab33 | 203 | } |
| be_bryan | 0:b74591d5ab33 | 204 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 205 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 206 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag |
| be_bryan | 0:b74591d5ab33 | 207 | } |
| be_bryan | 0:b74591d5ab33 | 208 | } |
| be_bryan | 0:b74591d5ab33 | 209 | } |
| be_bryan | 0:b74591d5ab33 | 210 | } |
| be_bryan | 0:b74591d5ab33 | 211 | |
| be_bryan | 0:b74591d5ab33 | 212 | static void uart1_irq(void) |
| be_bryan | 0:b74591d5ab33 | 213 | { |
| be_bryan | 0:b74591d5ab33 | 214 | uart_irq(0); |
| be_bryan | 0:b74591d5ab33 | 215 | } |
| be_bryan | 0:b74591d5ab33 | 216 | |
| be_bryan | 0:b74591d5ab33 | 217 | static void uart2_irq(void) |
| be_bryan | 0:b74591d5ab33 | 218 | { |
| be_bryan | 0:b74591d5ab33 | 219 | uart_irq(1); |
| be_bryan | 0:b74591d5ab33 | 220 | } |
| be_bryan | 0:b74591d5ab33 | 221 | |
| be_bryan | 0:b74591d5ab33 | 222 | static void uart3_irq(void) |
| be_bryan | 0:b74591d5ab33 | 223 | { |
| be_bryan | 0:b74591d5ab33 | 224 | uart_irq(2); |
| be_bryan | 0:b74591d5ab33 | 225 | } |
| be_bryan | 0:b74591d5ab33 | 226 | |
| be_bryan | 0:b74591d5ab33 | 227 | #if defined(UART4_BASE) |
| be_bryan | 0:b74591d5ab33 | 228 | static void uart4_irq(void) |
| be_bryan | 0:b74591d5ab33 | 229 | { |
| be_bryan | 0:b74591d5ab33 | 230 | uart_irq(3); |
| be_bryan | 0:b74591d5ab33 | 231 | } |
| be_bryan | 0:b74591d5ab33 | 232 | #endif |
| be_bryan | 0:b74591d5ab33 | 233 | #if defined(UART5_BASE) |
| be_bryan | 0:b74591d5ab33 | 234 | static void uart5_irq(void) |
| be_bryan | 0:b74591d5ab33 | 235 | { |
| be_bryan | 0:b74591d5ab33 | 236 | uart_irq(4); |
| be_bryan | 0:b74591d5ab33 | 237 | } |
| be_bryan | 0:b74591d5ab33 | 238 | #endif |
| be_bryan | 0:b74591d5ab33 | 239 | |
| be_bryan | 0:b74591d5ab33 | 240 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) |
| be_bryan | 0:b74591d5ab33 | 241 | { |
| be_bryan | 0:b74591d5ab33 | 242 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 243 | |
| be_bryan | 0:b74591d5ab33 | 244 | irq_handler = handler; |
| be_bryan | 0:b74591d5ab33 | 245 | serial_irq_ids[obj_s->index] = id; |
| be_bryan | 0:b74591d5ab33 | 246 | } |
| be_bryan | 0:b74591d5ab33 | 247 | |
| be_bryan | 0:b74591d5ab33 | 248 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) |
| be_bryan | 0:b74591d5ab33 | 249 | { |
| be_bryan | 0:b74591d5ab33 | 250 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 251 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 252 | IRQn_Type irq_n = (IRQn_Type)0; |
| be_bryan | 0:b74591d5ab33 | 253 | uint32_t vector = 0; |
| be_bryan | 0:b74591d5ab33 | 254 | |
| be_bryan | 0:b74591d5ab33 | 255 | if (obj_s->uart == UART_1) { |
| be_bryan | 0:b74591d5ab33 | 256 | irq_n = USART1_IRQn; |
| be_bryan | 0:b74591d5ab33 | 257 | vector = (uint32_t)&uart1_irq; |
| be_bryan | 0:b74591d5ab33 | 258 | } |
| be_bryan | 0:b74591d5ab33 | 259 | |
| be_bryan | 0:b74591d5ab33 | 260 | if (obj_s->uart == UART_2) { |
| be_bryan | 0:b74591d5ab33 | 261 | irq_n = USART2_IRQn; |
| be_bryan | 0:b74591d5ab33 | 262 | vector = (uint32_t)&uart2_irq; |
| be_bryan | 0:b74591d5ab33 | 263 | } |
| be_bryan | 0:b74591d5ab33 | 264 | |
| be_bryan | 0:b74591d5ab33 | 265 | if (obj_s->uart == UART_3) { |
| be_bryan | 0:b74591d5ab33 | 266 | irq_n = USART3_IRQn; |
| be_bryan | 0:b74591d5ab33 | 267 | vector = (uint32_t)&uart3_irq; |
| be_bryan | 0:b74591d5ab33 | 268 | } |
| be_bryan | 0:b74591d5ab33 | 269 | #if defined(UART4_BASE) |
| be_bryan | 0:b74591d5ab33 | 270 | if (obj_s->uart == UART_4) { |
| be_bryan | 0:b74591d5ab33 | 271 | irq_n = UART4_IRQn; |
| be_bryan | 0:b74591d5ab33 | 272 | vector = (uint32_t)&uart4_irq; |
| be_bryan | 0:b74591d5ab33 | 273 | } |
| be_bryan | 0:b74591d5ab33 | 274 | #endif |
| be_bryan | 0:b74591d5ab33 | 275 | #if defined(UART5_BASE) |
| be_bryan | 0:b74591d5ab33 | 276 | if (obj_s->uart == UART_5) { |
| be_bryan | 0:b74591d5ab33 | 277 | irq_n = UART5_IRQn; |
| be_bryan | 0:b74591d5ab33 | 278 | vector = (uint32_t)&uart5_irq; |
| be_bryan | 0:b74591d5ab33 | 279 | } |
| be_bryan | 0:b74591d5ab33 | 280 | #endif |
| be_bryan | 0:b74591d5ab33 | 281 | |
| be_bryan | 0:b74591d5ab33 | 282 | if (enable) { |
| be_bryan | 0:b74591d5ab33 | 283 | if (irq == RxIrq) { |
| be_bryan | 0:b74591d5ab33 | 284 | __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE); |
| be_bryan | 0:b74591d5ab33 | 285 | } else { // TxIrq |
| be_bryan | 0:b74591d5ab33 | 286 | __HAL_UART_ENABLE_IT(huart, UART_IT_TXE); |
| be_bryan | 0:b74591d5ab33 | 287 | } |
| be_bryan | 0:b74591d5ab33 | 288 | NVIC_SetVector(irq_n, vector); |
| be_bryan | 0:b74591d5ab33 | 289 | NVIC_EnableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 290 | |
| be_bryan | 0:b74591d5ab33 | 291 | } else { // disable |
| be_bryan | 0:b74591d5ab33 | 292 | int all_disabled = 0; |
| be_bryan | 0:b74591d5ab33 | 293 | if (irq == RxIrq) { |
| be_bryan | 0:b74591d5ab33 | 294 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
| be_bryan | 0:b74591d5ab33 | 295 | // Check if TxIrq is disabled too |
| be_bryan | 0:b74591d5ab33 | 296 | if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) { |
| be_bryan | 0:b74591d5ab33 | 297 | all_disabled = 1; |
| be_bryan | 0:b74591d5ab33 | 298 | } |
| be_bryan | 0:b74591d5ab33 | 299 | } else { // TxIrq |
| be_bryan | 0:b74591d5ab33 | 300 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
| be_bryan | 0:b74591d5ab33 | 301 | // Check if RxIrq is disabled too |
| be_bryan | 0:b74591d5ab33 | 302 | if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) { |
| be_bryan | 0:b74591d5ab33 | 303 | all_disabled = 1; |
| be_bryan | 0:b74591d5ab33 | 304 | } |
| be_bryan | 0:b74591d5ab33 | 305 | } |
| be_bryan | 0:b74591d5ab33 | 306 | |
| be_bryan | 0:b74591d5ab33 | 307 | if (all_disabled) { |
| be_bryan | 0:b74591d5ab33 | 308 | NVIC_DisableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 309 | } |
| be_bryan | 0:b74591d5ab33 | 310 | } |
| be_bryan | 0:b74591d5ab33 | 311 | } |
| be_bryan | 0:b74591d5ab33 | 312 | |
| be_bryan | 0:b74591d5ab33 | 313 | /****************************************************************************** |
| be_bryan | 0:b74591d5ab33 | 314 | * READ/WRITE |
| be_bryan | 0:b74591d5ab33 | 315 | ******************************************************************************/ |
| be_bryan | 0:b74591d5ab33 | 316 | |
| be_bryan | 0:b74591d5ab33 | 317 | int serial_getc(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 318 | { |
| be_bryan | 0:b74591d5ab33 | 319 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 320 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 321 | |
| be_bryan | 0:b74591d5ab33 | 322 | while (!serial_readable(obj)); |
| be_bryan | 0:b74591d5ab33 | 323 | if (obj_s->databits == UART_WORDLENGTH_8B) { |
| be_bryan | 0:b74591d5ab33 | 324 | return (int)(huart->Instance->DR & (uint8_t)0xFF); |
| be_bryan | 0:b74591d5ab33 | 325 | } else { |
| be_bryan | 0:b74591d5ab33 | 326 | return (int)(huart->Instance->DR & (uint16_t)0x1FF); |
| be_bryan | 0:b74591d5ab33 | 327 | } |
| be_bryan | 0:b74591d5ab33 | 328 | } |
| be_bryan | 0:b74591d5ab33 | 329 | |
| be_bryan | 0:b74591d5ab33 | 330 | void serial_putc(serial_t *obj, int c) |
| be_bryan | 0:b74591d5ab33 | 331 | { |
| be_bryan | 0:b74591d5ab33 | 332 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 333 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 334 | |
| be_bryan | 0:b74591d5ab33 | 335 | while (!serial_writable(obj)); |
| be_bryan | 0:b74591d5ab33 | 336 | if (obj_s->databits == UART_WORDLENGTH_8B) { |
| be_bryan | 0:b74591d5ab33 | 337 | huart->Instance->DR = (uint8_t)(c & (uint8_t)0xFF); |
| be_bryan | 0:b74591d5ab33 | 338 | } else { |
| be_bryan | 0:b74591d5ab33 | 339 | huart->Instance->DR = (uint16_t)(c & (uint16_t)0x1FF); |
| be_bryan | 0:b74591d5ab33 | 340 | } |
| be_bryan | 0:b74591d5ab33 | 341 | } |
| be_bryan | 0:b74591d5ab33 | 342 | |
| be_bryan | 0:b74591d5ab33 | 343 | void serial_clear(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 344 | { |
| be_bryan | 0:b74591d5ab33 | 345 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 346 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 347 | |
| be_bryan | 0:b74591d5ab33 | 348 | huart->TxXferCount = 0; |
| be_bryan | 0:b74591d5ab33 | 349 | huart->RxXferCount = 0; |
| be_bryan | 0:b74591d5ab33 | 350 | } |
| be_bryan | 0:b74591d5ab33 | 351 | |
| be_bryan | 0:b74591d5ab33 | 352 | void serial_break_set(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 353 | { |
| be_bryan | 0:b74591d5ab33 | 354 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 355 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 356 | |
| be_bryan | 0:b74591d5ab33 | 357 | HAL_LIN_SendBreak(huart); |
| be_bryan | 0:b74591d5ab33 | 358 | } |
| be_bryan | 0:b74591d5ab33 | 359 | |
| be_bryan | 0:b74591d5ab33 | 360 | #if DEVICE_SERIAL_ASYNCH |
| be_bryan | 0:b74591d5ab33 | 361 | |
| be_bryan | 0:b74591d5ab33 | 362 | /****************************************************************************** |
| be_bryan | 0:b74591d5ab33 | 363 | * LOCAL HELPER FUNCTIONS |
| be_bryan | 0:b74591d5ab33 | 364 | ******************************************************************************/ |
| be_bryan | 0:b74591d5ab33 | 365 | |
| be_bryan | 0:b74591d5ab33 | 366 | /** |
| be_bryan | 0:b74591d5ab33 | 367 | * Configure the TX buffer for an asynchronous write serial transaction |
| be_bryan | 0:b74591d5ab33 | 368 | * |
| be_bryan | 0:b74591d5ab33 | 369 | * @param obj The serial object. |
| be_bryan | 0:b74591d5ab33 | 370 | * @param tx The buffer for sending. |
| be_bryan | 0:b74591d5ab33 | 371 | * @param tx_length The number of words to transmit. |
| be_bryan | 0:b74591d5ab33 | 372 | */ |
| be_bryan | 0:b74591d5ab33 | 373 | static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width) |
| be_bryan | 0:b74591d5ab33 | 374 | { |
| be_bryan | 0:b74591d5ab33 | 375 | (void)width; |
| be_bryan | 0:b74591d5ab33 | 376 | |
| be_bryan | 0:b74591d5ab33 | 377 | // Exit if a transmit is already on-going |
| be_bryan | 0:b74591d5ab33 | 378 | if (serial_tx_active(obj)) { |
| be_bryan | 0:b74591d5ab33 | 379 | return; |
| be_bryan | 0:b74591d5ab33 | 380 | } |
| be_bryan | 0:b74591d5ab33 | 381 | |
| be_bryan | 0:b74591d5ab33 | 382 | obj->tx_buff.buffer = tx; |
| be_bryan | 0:b74591d5ab33 | 383 | obj->tx_buff.length = tx_length; |
| be_bryan | 0:b74591d5ab33 | 384 | obj->tx_buff.pos = 0; |
| be_bryan | 0:b74591d5ab33 | 385 | } |
| be_bryan | 0:b74591d5ab33 | 386 | |
| be_bryan | 0:b74591d5ab33 | 387 | /** |
| be_bryan | 0:b74591d5ab33 | 388 | * Configure the RX buffer for an asynchronous write serial transaction |
| be_bryan | 0:b74591d5ab33 | 389 | * |
| be_bryan | 0:b74591d5ab33 | 390 | * @param obj The serial object. |
| be_bryan | 0:b74591d5ab33 | 391 | * @param tx The buffer for sending. |
| be_bryan | 0:b74591d5ab33 | 392 | * @param tx_length The number of words to transmit. |
| be_bryan | 0:b74591d5ab33 | 393 | */ |
| be_bryan | 0:b74591d5ab33 | 394 | static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width) |
| be_bryan | 0:b74591d5ab33 | 395 | { |
| be_bryan | 0:b74591d5ab33 | 396 | (void)width; |
| be_bryan | 0:b74591d5ab33 | 397 | |
| be_bryan | 0:b74591d5ab33 | 398 | // Exit if a reception is already on-going |
| be_bryan | 0:b74591d5ab33 | 399 | if (serial_rx_active(obj)) { |
| be_bryan | 0:b74591d5ab33 | 400 | return; |
| be_bryan | 0:b74591d5ab33 | 401 | } |
| be_bryan | 0:b74591d5ab33 | 402 | |
| be_bryan | 0:b74591d5ab33 | 403 | obj->rx_buff.buffer = rx; |
| be_bryan | 0:b74591d5ab33 | 404 | obj->rx_buff.length = rx_length; |
| be_bryan | 0:b74591d5ab33 | 405 | obj->rx_buff.pos = 0; |
| be_bryan | 0:b74591d5ab33 | 406 | } |
| be_bryan | 0:b74591d5ab33 | 407 | |
| be_bryan | 0:b74591d5ab33 | 408 | /** |
| be_bryan | 0:b74591d5ab33 | 409 | * Configure events |
| be_bryan | 0:b74591d5ab33 | 410 | * |
| be_bryan | 0:b74591d5ab33 | 411 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 412 | * @param event The logical OR of the events to configure |
| be_bryan | 0:b74591d5ab33 | 413 | * @param enable Set to non-zero to enable events, or zero to disable them |
| be_bryan | 0:b74591d5ab33 | 414 | */ |
| be_bryan | 0:b74591d5ab33 | 415 | static void serial_enable_event(serial_t *obj, int event, uint8_t enable) |
| be_bryan | 0:b74591d5ab33 | 416 | { |
| be_bryan | 0:b74591d5ab33 | 417 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 418 | |
| be_bryan | 0:b74591d5ab33 | 419 | // Shouldn't have to enable interrupt here, just need to keep track of the requested events. |
| be_bryan | 0:b74591d5ab33 | 420 | if (enable) { |
| be_bryan | 0:b74591d5ab33 | 421 | obj_s->events |= event; |
| be_bryan | 0:b74591d5ab33 | 422 | } else { |
| be_bryan | 0:b74591d5ab33 | 423 | obj_s->events &= ~event; |
| be_bryan | 0:b74591d5ab33 | 424 | } |
| be_bryan | 0:b74591d5ab33 | 425 | } |
| be_bryan | 0:b74591d5ab33 | 426 | |
| be_bryan | 0:b74591d5ab33 | 427 | |
| be_bryan | 0:b74591d5ab33 | 428 | /** |
| be_bryan | 0:b74591d5ab33 | 429 | * Get index of serial object TX IRQ, relating it to the physical peripheral. |
| be_bryan | 0:b74591d5ab33 | 430 | * |
| be_bryan | 0:b74591d5ab33 | 431 | * @param obj pointer to serial object |
| be_bryan | 0:b74591d5ab33 | 432 | * @return internal NVIC TX IRQ index of U(S)ART peripheral |
| be_bryan | 0:b74591d5ab33 | 433 | */ |
| be_bryan | 0:b74591d5ab33 | 434 | static IRQn_Type serial_get_irq_n(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 435 | { |
| be_bryan | 0:b74591d5ab33 | 436 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 437 | IRQn_Type irq_n; |
| be_bryan | 0:b74591d5ab33 | 438 | |
| be_bryan | 0:b74591d5ab33 | 439 | switch (obj_s->index) { |
| be_bryan | 0:b74591d5ab33 | 440 | case 0: |
| be_bryan | 0:b74591d5ab33 | 441 | irq_n = USART1_IRQn; |
| be_bryan | 0:b74591d5ab33 | 442 | break; |
| be_bryan | 0:b74591d5ab33 | 443 | |
| be_bryan | 0:b74591d5ab33 | 444 | case 1: |
| be_bryan | 0:b74591d5ab33 | 445 | irq_n = USART2_IRQn; |
| be_bryan | 0:b74591d5ab33 | 446 | break; |
| be_bryan | 0:b74591d5ab33 | 447 | |
| be_bryan | 0:b74591d5ab33 | 448 | case 2: |
| be_bryan | 0:b74591d5ab33 | 449 | irq_n = USART3_IRQn; |
| be_bryan | 0:b74591d5ab33 | 450 | break; |
| be_bryan | 0:b74591d5ab33 | 451 | #if defined(UART4_BASE) |
| be_bryan | 0:b74591d5ab33 | 452 | case 3: |
| be_bryan | 0:b74591d5ab33 | 453 | irq_n = UART4_IRQn; |
| be_bryan | 0:b74591d5ab33 | 454 | break; |
| be_bryan | 0:b74591d5ab33 | 455 | #endif |
| be_bryan | 0:b74591d5ab33 | 456 | #if defined(UART5_BASE) |
| be_bryan | 0:b74591d5ab33 | 457 | case 4: |
| be_bryan | 0:b74591d5ab33 | 458 | irq_n = UART5_IRQn; |
| be_bryan | 0:b74591d5ab33 | 459 | break; |
| be_bryan | 0:b74591d5ab33 | 460 | #endif |
| be_bryan | 0:b74591d5ab33 | 461 | default: |
| be_bryan | 0:b74591d5ab33 | 462 | irq_n = (IRQn_Type)0; |
| be_bryan | 0:b74591d5ab33 | 463 | } |
| be_bryan | 0:b74591d5ab33 | 464 | |
| be_bryan | 0:b74591d5ab33 | 465 | return irq_n; |
| be_bryan | 0:b74591d5ab33 | 466 | } |
| be_bryan | 0:b74591d5ab33 | 467 | |
| be_bryan | 0:b74591d5ab33 | 468 | /****************************************************************************** |
| be_bryan | 0:b74591d5ab33 | 469 | * MBED API FUNCTIONS |
| be_bryan | 0:b74591d5ab33 | 470 | ******************************************************************************/ |
| be_bryan | 0:b74591d5ab33 | 471 | |
| be_bryan | 0:b74591d5ab33 | 472 | /** |
| be_bryan | 0:b74591d5ab33 | 473 | * Begin asynchronous TX transfer. The used buffer is specified in the serial |
| be_bryan | 0:b74591d5ab33 | 474 | * object, tx_buff |
| be_bryan | 0:b74591d5ab33 | 475 | * |
| be_bryan | 0:b74591d5ab33 | 476 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 477 | * @param tx The buffer for sending |
| be_bryan | 0:b74591d5ab33 | 478 | * @param tx_length The number of words to transmit |
| be_bryan | 0:b74591d5ab33 | 479 | * @param tx_width The bit width of buffer word |
| be_bryan | 0:b74591d5ab33 | 480 | * @param handler The serial handler |
| be_bryan | 0:b74591d5ab33 | 481 | * @param event The logical OR of events to be registered |
| be_bryan | 0:b74591d5ab33 | 482 | * @param hint A suggestion for how to use DMA with this transfer |
| be_bryan | 0:b74591d5ab33 | 483 | * @return Returns number of data transfered, or 0 otherwise |
| be_bryan | 0:b74591d5ab33 | 484 | */ |
| be_bryan | 0:b74591d5ab33 | 485 | 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) |
| be_bryan | 0:b74591d5ab33 | 486 | { |
| be_bryan | 0:b74591d5ab33 | 487 | // TODO: DMA usage is currently ignored |
| be_bryan | 0:b74591d5ab33 | 488 | (void) hint; |
| be_bryan | 0:b74591d5ab33 | 489 | |
| be_bryan | 0:b74591d5ab33 | 490 | // Check buffer is ok |
| be_bryan | 0:b74591d5ab33 | 491 | MBED_ASSERT(tx != (void*)0); |
| be_bryan | 0:b74591d5ab33 | 492 | MBED_ASSERT(tx_width == 8); // support only 8b width |
| be_bryan | 0:b74591d5ab33 | 493 | |
| be_bryan | 0:b74591d5ab33 | 494 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 495 | UART_HandleTypeDef * huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 496 | |
| be_bryan | 0:b74591d5ab33 | 497 | if (tx_length == 0) { |
| be_bryan | 0:b74591d5ab33 | 498 | return 0; |
| be_bryan | 0:b74591d5ab33 | 499 | } |
| be_bryan | 0:b74591d5ab33 | 500 | |
| be_bryan | 0:b74591d5ab33 | 501 | // Set up buffer |
| be_bryan | 0:b74591d5ab33 | 502 | serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width); |
| be_bryan | 0:b74591d5ab33 | 503 | |
| be_bryan | 0:b74591d5ab33 | 504 | // Set up events |
| be_bryan | 0:b74591d5ab33 | 505 | serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events |
| be_bryan | 0:b74591d5ab33 | 506 | serial_enable_event(obj, event, 1); // Set only the wanted events |
| be_bryan | 0:b74591d5ab33 | 507 | |
| be_bryan | 0:b74591d5ab33 | 508 | // Enable interrupt |
| be_bryan | 0:b74591d5ab33 | 509 | IRQn_Type irq_n = serial_get_irq_n(obj); |
| be_bryan | 0:b74591d5ab33 | 510 | NVIC_ClearPendingIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 511 | NVIC_DisableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 512 | NVIC_SetPriority(irq_n, 1); |
| be_bryan | 0:b74591d5ab33 | 513 | NVIC_SetVector(irq_n, (uint32_t)handler); |
| be_bryan | 0:b74591d5ab33 | 514 | NVIC_EnableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 515 | |
| be_bryan | 0:b74591d5ab33 | 516 | // the following function will enable UART_IT_TXE and error interrupts |
| be_bryan | 0:b74591d5ab33 | 517 | if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) { |
| be_bryan | 0:b74591d5ab33 | 518 | return 0; |
| be_bryan | 0:b74591d5ab33 | 519 | } |
| be_bryan | 0:b74591d5ab33 | 520 | |
| be_bryan | 0:b74591d5ab33 | 521 | return tx_length; |
| be_bryan | 0:b74591d5ab33 | 522 | } |
| be_bryan | 0:b74591d5ab33 | 523 | |
| be_bryan | 0:b74591d5ab33 | 524 | /** |
| be_bryan | 0:b74591d5ab33 | 525 | * Begin asynchronous RX transfer (enable interrupt for data collecting) |
| be_bryan | 0:b74591d5ab33 | 526 | * The used buffer is specified in the serial object, rx_buff |
| be_bryan | 0:b74591d5ab33 | 527 | * |
| be_bryan | 0:b74591d5ab33 | 528 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 529 | * @param rx The buffer for sending |
| be_bryan | 0:b74591d5ab33 | 530 | * @param rx_length The number of words to transmit |
| be_bryan | 0:b74591d5ab33 | 531 | * @param rx_width The bit width of buffer word |
| be_bryan | 0:b74591d5ab33 | 532 | * @param handler The serial handler |
| be_bryan | 0:b74591d5ab33 | 533 | * @param event The logical OR of events to be registered |
| be_bryan | 0:b74591d5ab33 | 534 | * @param handler The serial handler |
| be_bryan | 0:b74591d5ab33 | 535 | * @param char_match A character in range 0-254 to be matched |
| be_bryan | 0:b74591d5ab33 | 536 | * @param hint A suggestion for how to use DMA with this transfer |
| be_bryan | 0:b74591d5ab33 | 537 | */ |
| be_bryan | 0:b74591d5ab33 | 538 | 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) |
| be_bryan | 0:b74591d5ab33 | 539 | { |
| be_bryan | 0:b74591d5ab33 | 540 | // TODO: DMA usage is currently ignored |
| be_bryan | 0:b74591d5ab33 | 541 | (void) hint; |
| be_bryan | 0:b74591d5ab33 | 542 | |
| be_bryan | 0:b74591d5ab33 | 543 | /* Sanity check arguments */ |
| be_bryan | 0:b74591d5ab33 | 544 | MBED_ASSERT(obj); |
| be_bryan | 0:b74591d5ab33 | 545 | MBED_ASSERT(rx != (void*)0); |
| be_bryan | 0:b74591d5ab33 | 546 | MBED_ASSERT(rx_width == 8); // support only 8b width |
| be_bryan | 0:b74591d5ab33 | 547 | |
| be_bryan | 0:b74591d5ab33 | 548 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 549 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 550 | |
| be_bryan | 0:b74591d5ab33 | 551 | serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0); |
| be_bryan | 0:b74591d5ab33 | 552 | serial_enable_event(obj, event, 1); |
| be_bryan | 0:b74591d5ab33 | 553 | |
| be_bryan | 0:b74591d5ab33 | 554 | // set CharMatch |
| be_bryan | 0:b74591d5ab33 | 555 | obj->char_match = char_match; |
| be_bryan | 0:b74591d5ab33 | 556 | |
| be_bryan | 0:b74591d5ab33 | 557 | serial_rx_buffer_set(obj, rx, rx_length, rx_width); |
| be_bryan | 0:b74591d5ab33 | 558 | |
| be_bryan | 0:b74591d5ab33 | 559 | IRQn_Type irq_n = serial_get_irq_n(obj); |
| be_bryan | 0:b74591d5ab33 | 560 | NVIC_ClearPendingIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 561 | NVIC_DisableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 562 | NVIC_SetPriority(irq_n, 0); |
| be_bryan | 0:b74591d5ab33 | 563 | NVIC_SetVector(irq_n, (uint32_t)handler); |
| be_bryan | 0:b74591d5ab33 | 564 | NVIC_EnableIRQ(irq_n); |
| be_bryan | 0:b74591d5ab33 | 565 | |
| be_bryan | 0:b74591d5ab33 | 566 | // following HAL function will enable the RXNE interrupt + error interrupts |
| be_bryan | 0:b74591d5ab33 | 567 | HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length); |
| be_bryan | 0:b74591d5ab33 | 568 | } |
| be_bryan | 0:b74591d5ab33 | 569 | |
| be_bryan | 0:b74591d5ab33 | 570 | /** |
| be_bryan | 0:b74591d5ab33 | 571 | * Attempts to determine if the serial peripheral is already in use for TX |
| be_bryan | 0:b74591d5ab33 | 572 | * |
| be_bryan | 0:b74591d5ab33 | 573 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 574 | * @return Non-zero if the TX transaction is ongoing, 0 otherwise |
| be_bryan | 0:b74591d5ab33 | 575 | */ |
| be_bryan | 0:b74591d5ab33 | 576 | uint8_t serial_tx_active(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 577 | { |
| be_bryan | 0:b74591d5ab33 | 578 | MBED_ASSERT(obj); |
| be_bryan | 0:b74591d5ab33 | 579 | |
| be_bryan | 0:b74591d5ab33 | 580 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 581 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 582 | |
| be_bryan | 0:b74591d5ab33 | 583 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0); |
| be_bryan | 0:b74591d5ab33 | 584 | } |
| be_bryan | 0:b74591d5ab33 | 585 | |
| be_bryan | 0:b74591d5ab33 | 586 | /** |
| be_bryan | 0:b74591d5ab33 | 587 | * Attempts to determine if the serial peripheral is already in use for RX |
| be_bryan | 0:b74591d5ab33 | 588 | * |
| be_bryan | 0:b74591d5ab33 | 589 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 590 | * @return Non-zero if the RX transaction is ongoing, 0 otherwise |
| be_bryan | 0:b74591d5ab33 | 591 | */ |
| be_bryan | 0:b74591d5ab33 | 592 | uint8_t serial_rx_active(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 593 | { |
| be_bryan | 0:b74591d5ab33 | 594 | MBED_ASSERT(obj); |
| be_bryan | 0:b74591d5ab33 | 595 | |
| be_bryan | 0:b74591d5ab33 | 596 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 597 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 598 | |
| be_bryan | 0:b74591d5ab33 | 599 | return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0); |
| be_bryan | 0:b74591d5ab33 | 600 | } |
| be_bryan | 0:b74591d5ab33 | 601 | |
| be_bryan | 0:b74591d5ab33 | 602 | void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) { |
| be_bryan | 0:b74591d5ab33 | 603 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 604 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
| be_bryan | 0:b74591d5ab33 | 605 | } |
| be_bryan | 0:b74591d5ab33 | 606 | } |
| be_bryan | 0:b74591d5ab33 | 607 | |
| be_bryan | 0:b74591d5ab33 | 608 | void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) { |
| be_bryan | 0:b74591d5ab33 | 609 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 610 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear PE flag |
| be_bryan | 0:b74591d5ab33 | 611 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 612 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear FE flag |
| be_bryan | 0:b74591d5ab33 | 613 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 614 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear NE flag |
| be_bryan | 0:b74591d5ab33 | 615 | } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 616 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag |
| be_bryan | 0:b74591d5ab33 | 617 | } |
| be_bryan | 0:b74591d5ab33 | 618 | } |
| be_bryan | 0:b74591d5ab33 | 619 | |
| be_bryan | 0:b74591d5ab33 | 620 | /** |
| be_bryan | 0:b74591d5ab33 | 621 | * The asynchronous TX and RX handler. |
| be_bryan | 0:b74591d5ab33 | 622 | * |
| be_bryan | 0:b74591d5ab33 | 623 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 624 | * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise |
| be_bryan | 0:b74591d5ab33 | 625 | */ |
| be_bryan | 0:b74591d5ab33 | 626 | int serial_irq_handler_asynch(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 627 | { |
| be_bryan | 0:b74591d5ab33 | 628 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 629 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 630 | |
| be_bryan | 0:b74591d5ab33 | 631 | volatile int return_event = 0; |
| be_bryan | 0:b74591d5ab33 | 632 | uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer); |
| be_bryan | 0:b74591d5ab33 | 633 | uint8_t i = 0; |
| be_bryan | 0:b74591d5ab33 | 634 | |
| be_bryan | 0:b74591d5ab33 | 635 | // TX PART: |
| be_bryan | 0:b74591d5ab33 | 636 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 637 | if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 638 | // Return event SERIAL_EVENT_TX_COMPLETE if requested |
| be_bryan | 0:b74591d5ab33 | 639 | if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) { |
| be_bryan | 0:b74591d5ab33 | 640 | return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 641 | } |
| be_bryan | 0:b74591d5ab33 | 642 | } |
| be_bryan | 0:b74591d5ab33 | 643 | } |
| be_bryan | 0:b74591d5ab33 | 644 | |
| be_bryan | 0:b74591d5ab33 | 645 | // Handle error events |
| be_bryan | 0:b74591d5ab33 | 646 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 647 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 648 | return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 649 | } |
| be_bryan | 0:b74591d5ab33 | 650 | } |
| be_bryan | 0:b74591d5ab33 | 651 | |
| be_bryan | 0:b74591d5ab33 | 652 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 653 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 654 | return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 655 | } |
| be_bryan | 0:b74591d5ab33 | 656 | } |
| be_bryan | 0:b74591d5ab33 | 657 | |
| be_bryan | 0:b74591d5ab33 | 658 | if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 659 | if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) { |
| be_bryan | 0:b74591d5ab33 | 660 | return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 661 | } |
| be_bryan | 0:b74591d5ab33 | 662 | } |
| be_bryan | 0:b74591d5ab33 | 663 | |
| be_bryan | 0:b74591d5ab33 | 664 | HAL_UART_IRQHandler(huart); |
| be_bryan | 0:b74591d5ab33 | 665 | |
| be_bryan | 0:b74591d5ab33 | 666 | // Abort if an error occurs |
| be_bryan | 0:b74591d5ab33 | 667 | if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) || |
| be_bryan | 0:b74591d5ab33 | 668 | (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) || |
| be_bryan | 0:b74591d5ab33 | 669 | (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) { |
| be_bryan | 0:b74591d5ab33 | 670 | return return_event; |
| be_bryan | 0:b74591d5ab33 | 671 | } |
| be_bryan | 0:b74591d5ab33 | 672 | |
| be_bryan | 0:b74591d5ab33 | 673 | //RX PART |
| be_bryan | 0:b74591d5ab33 | 674 | if (huart->RxXferSize != 0) { |
| be_bryan | 0:b74591d5ab33 | 675 | obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount; |
| be_bryan | 0:b74591d5ab33 | 676 | } |
| be_bryan | 0:b74591d5ab33 | 677 | if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) { |
| be_bryan | 0:b74591d5ab33 | 678 | return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 679 | } |
| be_bryan | 0:b74591d5ab33 | 680 | |
| be_bryan | 0:b74591d5ab33 | 681 | // Check if char_match is present |
| be_bryan | 0:b74591d5ab33 | 682 | if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) { |
| be_bryan | 0:b74591d5ab33 | 683 | if (buf != NULL) { |
| be_bryan | 0:b74591d5ab33 | 684 | for (i = 0; i < obj->rx_buff.pos; i++) { |
| be_bryan | 0:b74591d5ab33 | 685 | if (buf[i] == obj->char_match) { |
| be_bryan | 0:b74591d5ab33 | 686 | obj->rx_buff.pos = i; |
| be_bryan | 0:b74591d5ab33 | 687 | return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events); |
| be_bryan | 0:b74591d5ab33 | 688 | serial_rx_abort_asynch(obj); |
| be_bryan | 0:b74591d5ab33 | 689 | break; |
| be_bryan | 0:b74591d5ab33 | 690 | } |
| be_bryan | 0:b74591d5ab33 | 691 | } |
| be_bryan | 0:b74591d5ab33 | 692 | } |
| be_bryan | 0:b74591d5ab33 | 693 | } |
| be_bryan | 0:b74591d5ab33 | 694 | |
| be_bryan | 0:b74591d5ab33 | 695 | return return_event; |
| be_bryan | 0:b74591d5ab33 | 696 | } |
| be_bryan | 0:b74591d5ab33 | 697 | |
| be_bryan | 0:b74591d5ab33 | 698 | /** |
| be_bryan | 0:b74591d5ab33 | 699 | * Abort the ongoing TX transaction. It disables the enabled interupt for TX and |
| be_bryan | 0:b74591d5ab33 | 700 | * flush TX hardware buffer if TX FIFO is used |
| be_bryan | 0:b74591d5ab33 | 701 | * |
| be_bryan | 0:b74591d5ab33 | 702 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 703 | */ |
| be_bryan | 0:b74591d5ab33 | 704 | void serial_tx_abort_asynch(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 705 | { |
| be_bryan | 0:b74591d5ab33 | 706 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 707 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 708 | |
| be_bryan | 0:b74591d5ab33 | 709 | __HAL_UART_DISABLE_IT(huart, UART_IT_TC); |
| be_bryan | 0:b74591d5ab33 | 710 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
| be_bryan | 0:b74591d5ab33 | 711 | |
| be_bryan | 0:b74591d5ab33 | 712 | // clear flags |
| be_bryan | 0:b74591d5ab33 | 713 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
| be_bryan | 0:b74591d5ab33 | 714 | |
| be_bryan | 0:b74591d5ab33 | 715 | // reset states |
| be_bryan | 0:b74591d5ab33 | 716 | huart->TxXferCount = 0; |
| be_bryan | 0:b74591d5ab33 | 717 | // update handle state |
| be_bryan | 0:b74591d5ab33 | 718 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX) { |
| be_bryan | 0:b74591d5ab33 | 719 | huart->State = HAL_UART_STATE_BUSY_RX; |
| be_bryan | 0:b74591d5ab33 | 720 | } else { |
| be_bryan | 0:b74591d5ab33 | 721 | huart->State = HAL_UART_STATE_READY; |
| be_bryan | 0:b74591d5ab33 | 722 | } |
| be_bryan | 0:b74591d5ab33 | 723 | } |
| be_bryan | 0:b74591d5ab33 | 724 | |
| be_bryan | 0:b74591d5ab33 | 725 | /** |
| be_bryan | 0:b74591d5ab33 | 726 | * Abort the ongoing RX transaction It disables the enabled interrupt for RX and |
| be_bryan | 0:b74591d5ab33 | 727 | * flush RX hardware buffer if RX FIFO is used |
| be_bryan | 0:b74591d5ab33 | 728 | * |
| be_bryan | 0:b74591d5ab33 | 729 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 730 | */ |
| be_bryan | 0:b74591d5ab33 | 731 | void serial_rx_abort_asynch(serial_t *obj) |
| be_bryan | 0:b74591d5ab33 | 732 | { |
| be_bryan | 0:b74591d5ab33 | 733 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 734 | UART_HandleTypeDef *huart = &uart_handlers[obj_s->index]; |
| be_bryan | 0:b74591d5ab33 | 735 | |
| be_bryan | 0:b74591d5ab33 | 736 | // disable interrupts |
| be_bryan | 0:b74591d5ab33 | 737 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
| be_bryan | 0:b74591d5ab33 | 738 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE); |
| be_bryan | 0:b74591d5ab33 | 739 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR); |
| be_bryan | 0:b74591d5ab33 | 740 | |
| be_bryan | 0:b74591d5ab33 | 741 | // clear flags |
| be_bryan | 0:b74591d5ab33 | 742 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE); |
| be_bryan | 0:b74591d5ab33 | 743 | volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear errors flag |
| be_bryan | 0:b74591d5ab33 | 744 | |
| be_bryan | 0:b74591d5ab33 | 745 | // reset states |
| be_bryan | 0:b74591d5ab33 | 746 | huart->RxXferCount = 0; |
| be_bryan | 0:b74591d5ab33 | 747 | // update handle state |
| be_bryan | 0:b74591d5ab33 | 748 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX) { |
| be_bryan | 0:b74591d5ab33 | 749 | huart->State = HAL_UART_STATE_BUSY_TX; |
| be_bryan | 0:b74591d5ab33 | 750 | } else { |
| be_bryan | 0:b74591d5ab33 | 751 | huart->State = HAL_UART_STATE_READY; |
| be_bryan | 0:b74591d5ab33 | 752 | } |
| be_bryan | 0:b74591d5ab33 | 753 | } |
| be_bryan | 0:b74591d5ab33 | 754 | |
| be_bryan | 0:b74591d5ab33 | 755 | #endif |
| be_bryan | 0:b74591d5ab33 | 756 | |
| be_bryan | 0:b74591d5ab33 | 757 | #if DEVICE_SERIAL_FC |
| be_bryan | 0:b74591d5ab33 | 758 | |
| be_bryan | 0:b74591d5ab33 | 759 | /** |
| be_bryan | 0:b74591d5ab33 | 760 | * Set HW Control Flow |
| be_bryan | 0:b74591d5ab33 | 761 | * @param obj The serial object |
| be_bryan | 0:b74591d5ab33 | 762 | * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS) |
| be_bryan | 0:b74591d5ab33 | 763 | * @param rxflow Pin for the rxflow |
| be_bryan | 0:b74591d5ab33 | 764 | * @param txflow Pin for the txflow |
| be_bryan | 0:b74591d5ab33 | 765 | */ |
| be_bryan | 0:b74591d5ab33 | 766 | void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) |
| be_bryan | 0:b74591d5ab33 | 767 | { |
| be_bryan | 0:b74591d5ab33 | 768 | struct serial_s *obj_s = SERIAL_S(obj); |
| be_bryan | 0:b74591d5ab33 | 769 | |
| be_bryan | 0:b74591d5ab33 | 770 | // Determine the UART to use (UART_1, UART_2, ...) |
| be_bryan | 0:b74591d5ab33 | 771 | UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS); |
| be_bryan | 0:b74591d5ab33 | 772 | UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS); |
| be_bryan | 0:b74591d5ab33 | 773 | |
| be_bryan | 0:b74591d5ab33 | 774 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
| be_bryan | 0:b74591d5ab33 | 775 | obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts); |
| be_bryan | 0:b74591d5ab33 | 776 | MBED_ASSERT(obj_s->uart != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 777 | |
| be_bryan | 0:b74591d5ab33 | 778 | if(type == FlowControlNone) { |
| be_bryan | 0:b74591d5ab33 | 779 | // Disable hardware flow control |
| be_bryan | 0:b74591d5ab33 | 780 | obj_s->hw_flow_ctl = UART_HWCONTROL_NONE; |
| be_bryan | 0:b74591d5ab33 | 781 | } |
| be_bryan | 0:b74591d5ab33 | 782 | if (type == FlowControlRTS) { |
| be_bryan | 0:b74591d5ab33 | 783 | // Enable RTS |
| be_bryan | 0:b74591d5ab33 | 784 | MBED_ASSERT(uart_rts != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 785 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS; |
| be_bryan | 0:b74591d5ab33 | 786 | obj_s->pin_rts = rxflow; |
| be_bryan | 0:b74591d5ab33 | 787 | // Enable the pin for RTS function |
| be_bryan | 0:b74591d5ab33 | 788 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
| be_bryan | 0:b74591d5ab33 | 789 | } |
| be_bryan | 0:b74591d5ab33 | 790 | if (type == FlowControlCTS) { |
| be_bryan | 0:b74591d5ab33 | 791 | // Enable CTS |
| be_bryan | 0:b74591d5ab33 | 792 | MBED_ASSERT(uart_cts != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 793 | obj_s->hw_flow_ctl = UART_HWCONTROL_CTS; |
| be_bryan | 0:b74591d5ab33 | 794 | obj_s->pin_cts = txflow; |
| be_bryan | 0:b74591d5ab33 | 795 | // Enable the pin for CTS function |
| be_bryan | 0:b74591d5ab33 | 796 | pinmap_pinout(txflow, PinMap_UART_CTS); |
| be_bryan | 0:b74591d5ab33 | 797 | } |
| be_bryan | 0:b74591d5ab33 | 798 | if (type == FlowControlRTSCTS) { |
| be_bryan | 0:b74591d5ab33 | 799 | // Enable CTS & RTS |
| be_bryan | 0:b74591d5ab33 | 800 | MBED_ASSERT(uart_rts != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 801 | MBED_ASSERT(uart_cts != (UARTName)NC); |
| be_bryan | 0:b74591d5ab33 | 802 | obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS; |
| be_bryan | 0:b74591d5ab33 | 803 | obj_s->pin_rts = rxflow; |
| be_bryan | 0:b74591d5ab33 | 804 | obj_s->pin_cts = txflow; |
| be_bryan | 0:b74591d5ab33 | 805 | // Enable the pin for CTS function |
| be_bryan | 0:b74591d5ab33 | 806 | pinmap_pinout(txflow, PinMap_UART_CTS); |
| be_bryan | 0:b74591d5ab33 | 807 | // Enable the pin for RTS function |
| be_bryan | 0:b74591d5ab33 | 808 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
| be_bryan | 0:b74591d5ab33 | 809 | } |
| be_bryan | 0:b74591d5ab33 | 810 | |
| be_bryan | 0:b74591d5ab33 | 811 | init_uart(obj); |
| be_bryan | 0:b74591d5ab33 | 812 | } |
| be_bryan | 0:b74591d5ab33 | 813 | |
| be_bryan | 0:b74591d5ab33 | 814 | #endif |
| be_bryan | 0:b74591d5ab33 | 815 | |
| be_bryan | 0:b74591d5ab33 | 816 | #endif |