sf
Fork of mbed-stm32l0l1-src-1 by
api_source/serial_api.c@639:b32fded6b0ae, 2016-09-27 (annotated)
- Committer:
- floatlei
- Date:
- Tue Sep 27 09:40:53 2016 +0000
- Revision:
- 639:b32fded6b0ae
- Parent:
- targets/hal/TARGET_STM/TARGET_STM32L0/serial_api.c@531:47d2b67c511f
sf
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 181:a4cbdfbbd2f4 | 1 | /* mbed Microcontroller Library |
mbed_official | 181:a4cbdfbbd2f4 | 2 | ******************************************************************************* |
mbed_official | 531:47d2b67c511f | 3 | * Copyright (c) 2015, STMicroelectronics |
mbed_official | 181:a4cbdfbbd2f4 | 4 | * All rights reserved. |
mbed_official | 181:a4cbdfbbd2f4 | 5 | * |
mbed_official | 181:a4cbdfbbd2f4 | 6 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 181:a4cbdfbbd2f4 | 7 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 181:a4cbdfbbd2f4 | 8 | * |
mbed_official | 181:a4cbdfbbd2f4 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 10 | * this list of conditions and the following disclaimer. |
mbed_official | 181:a4cbdfbbd2f4 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 12 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 181:a4cbdfbbd2f4 | 13 | * and/or other materials provided with the distribution. |
mbed_official | 181:a4cbdfbbd2f4 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 181:a4cbdfbbd2f4 | 15 | * may be used to endorse or promote products derived from this software |
mbed_official | 181:a4cbdfbbd2f4 | 16 | * without specific prior written permission. |
mbed_official | 181:a4cbdfbbd2f4 | 17 | * |
mbed_official | 181:a4cbdfbbd2f4 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 181:a4cbdfbbd2f4 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 181:a4cbdfbbd2f4 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 181:a4cbdfbbd2f4 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 181:a4cbdfbbd2f4 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 181:a4cbdfbbd2f4 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 181:a4cbdfbbd2f4 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 181:a4cbdfbbd2f4 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 181:a4cbdfbbd2f4 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 181:a4cbdfbbd2f4 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 181:a4cbdfbbd2f4 | 28 | ******************************************************************************* |
mbed_official | 181:a4cbdfbbd2f4 | 29 | */ |
mbed_official | 227:7bd0639b8911 | 30 | #include "mbed_assert.h" |
mbed_official | 181:a4cbdfbbd2f4 | 31 | #include "serial_api.h" |
mbed_official | 181:a4cbdfbbd2f4 | 32 | |
mbed_official | 181:a4cbdfbbd2f4 | 33 | #if DEVICE_SERIAL |
mbed_official | 181:a4cbdfbbd2f4 | 34 | |
mbed_official | 181:a4cbdfbbd2f4 | 35 | #include "cmsis.h" |
mbed_official | 181:a4cbdfbbd2f4 | 36 | #include "pinmap.h" |
mbed_official | 531:47d2b67c511f | 37 | #include "mbed_error.h" |
mbed_official | 181:a4cbdfbbd2f4 | 38 | #include <string.h> |
mbed_official | 414:4ec4c5b614b0 | 39 | #include "PeripheralPins.h" |
mbed_official | 181:a4cbdfbbd2f4 | 40 | |
mbed_official | 489:119543c9f674 | 41 | #define UART_NUM (5) |
mbed_official | 181:a4cbdfbbd2f4 | 42 | |
mbed_official | 489:119543c9f674 | 43 | static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0}; |
mbed_official | 181:a4cbdfbbd2f4 | 44 | |
mbed_official | 181:a4cbdfbbd2f4 | 45 | static uart_irq_handler irq_handler; |
mbed_official | 181:a4cbdfbbd2f4 | 46 | |
mbed_official | 181:a4cbdfbbd2f4 | 47 | UART_HandleTypeDef UartHandle; |
mbed_official | 181:a4cbdfbbd2f4 | 48 | |
mbed_official | 181:a4cbdfbbd2f4 | 49 | int stdio_uart_inited = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 50 | serial_t stdio_uart; |
mbed_official | 181:a4cbdfbbd2f4 | 51 | |
mbed_official | 402:09075a3b15e3 | 52 | static void init_uart(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 53 | { |
mbed_official | 181:a4cbdfbbd2f4 | 54 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 55 | |
mbed_official | 201:fa203361dc70 | 56 | if (obj->uart == LPUART_1) { |
mbed_official | 201:fa203361dc70 | 57 | UartHandle.Init.BaudRate = obj->baudrate >> 1; |
mbed_official | 201:fa203361dc70 | 58 | } else { |
mbed_official | 201:fa203361dc70 | 59 | UartHandle.Init.BaudRate = obj->baudrate; |
mbed_official | 201:fa203361dc70 | 60 | } |
mbed_official | 181:a4cbdfbbd2f4 | 61 | UartHandle.Init.WordLength = obj->databits; |
mbed_official | 181:a4cbdfbbd2f4 | 62 | UartHandle.Init.StopBits = obj->stopbits; |
mbed_official | 181:a4cbdfbbd2f4 | 63 | UartHandle.Init.Parity = obj->parity; |
mbed_official | 181:a4cbdfbbd2f4 | 64 | UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; |
mbed_official | 201:fa203361dc70 | 65 | |
mbed_official | 201:fa203361dc70 | 66 | if (obj->pin_rx == NC) { |
mbed_official | 201:fa203361dc70 | 67 | UartHandle.Init.Mode = UART_MODE_TX; |
mbed_official | 201:fa203361dc70 | 68 | } else if (obj->pin_tx == NC) { |
mbed_official | 201:fa203361dc70 | 69 | UartHandle.Init.Mode = UART_MODE_RX; |
mbed_official | 181:a4cbdfbbd2f4 | 70 | } else { |
mbed_official | 201:fa203361dc70 | 71 | UartHandle.Init.Mode = UART_MODE_TX_RX; |
mbed_official | 181:a4cbdfbbd2f4 | 72 | } |
mbed_official | 181:a4cbdfbbd2f4 | 73 | |
mbed_official | 293:2a9cf2ed1474 | 74 | // Disable the reception overrun detection |
mbed_official | 293:2a9cf2ed1474 | 75 | UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT; |
mbed_official | 293:2a9cf2ed1474 | 76 | UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE; |
mbed_official | 402:09075a3b15e3 | 77 | |
mbed_official | 531:47d2b67c511f | 78 | if (HAL_UART_Init(&UartHandle) != HAL_OK) { |
mbed_official | 531:47d2b67c511f | 79 | error("Cannot initialize UART"); |
mbed_official | 531:47d2b67c511f | 80 | } |
mbed_official | 181:a4cbdfbbd2f4 | 81 | } |
mbed_official | 181:a4cbdfbbd2f4 | 82 | |
mbed_official | 402:09075a3b15e3 | 83 | void serial_init(serial_t *obj, PinName tx, PinName rx) |
mbed_official | 402:09075a3b15e3 | 84 | { |
mbed_official | 181:a4cbdfbbd2f4 | 85 | // Determine the UART to use (UART_1, UART_2, ...) |
mbed_official | 181:a4cbdfbbd2f4 | 86 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
mbed_official | 181:a4cbdfbbd2f4 | 87 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
mbed_official | 181:a4cbdfbbd2f4 | 88 | |
mbed_official | 181:a4cbdfbbd2f4 | 89 | // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object |
mbed_official | 181:a4cbdfbbd2f4 | 90 | obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
mbed_official | 227:7bd0639b8911 | 91 | MBED_ASSERT(obj->uart != (UARTName)NC); |
mbed_official | 181:a4cbdfbbd2f4 | 92 | |
mbed_official | 181:a4cbdfbbd2f4 | 93 | // Enable UART clock |
mbed_official | 181:a4cbdfbbd2f4 | 94 | if (obj->uart == UART_1) { |
mbed_official | 489:119543c9f674 | 95 | __HAL_RCC_USART1_CLK_ENABLE(); |
mbed_official | 181:a4cbdfbbd2f4 | 96 | obj->index = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 97 | } |
mbed_official | 181:a4cbdfbbd2f4 | 98 | |
mbed_official | 181:a4cbdfbbd2f4 | 99 | if (obj->uart == UART_2) { |
mbed_official | 489:119543c9f674 | 100 | __HAL_RCC_USART2_CLK_ENABLE(); |
mbed_official | 181:a4cbdfbbd2f4 | 101 | obj->index = 1; |
mbed_official | 181:a4cbdfbbd2f4 | 102 | } |
mbed_official | 181:a4cbdfbbd2f4 | 103 | |
mbed_official | 181:a4cbdfbbd2f4 | 104 | if (obj->uart == LPUART_1) { |
mbed_official | 489:119543c9f674 | 105 | __HAL_RCC_LPUART1_CLK_ENABLE(); |
mbed_official | 181:a4cbdfbbd2f4 | 106 | obj->index = 2; |
mbed_official | 181:a4cbdfbbd2f4 | 107 | } |
mbed_official | 181:a4cbdfbbd2f4 | 108 | |
mbed_official | 489:119543c9f674 | 109 | #if defined(USART4_BASE) |
mbed_official | 489:119543c9f674 | 110 | if (obj->uart == UART_4) { |
mbed_official | 489:119543c9f674 | 111 | __HAL_RCC_USART4_CLK_ENABLE(); |
mbed_official | 489:119543c9f674 | 112 | obj->index = 3; |
mbed_official | 489:119543c9f674 | 113 | } |
mbed_official | 489:119543c9f674 | 114 | #endif |
mbed_official | 489:119543c9f674 | 115 | |
mbed_official | 489:119543c9f674 | 116 | #if defined(USART5_BASE) |
mbed_official | 489:119543c9f674 | 117 | if (obj->uart == UART_5) { |
mbed_official | 489:119543c9f674 | 118 | __HAL_RCC_USART5_CLK_ENABLE(); |
mbed_official | 489:119543c9f674 | 119 | obj->index = 4; |
mbed_official | 489:119543c9f674 | 120 | } |
mbed_official | 489:119543c9f674 | 121 | #endif |
mbed_official | 489:119543c9f674 | 122 | |
mbed_official | 181:a4cbdfbbd2f4 | 123 | // Configure the UART pins |
mbed_official | 181:a4cbdfbbd2f4 | 124 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 181:a4cbdfbbd2f4 | 125 | pinmap_pinout(rx, PinMap_UART_RX); |
mbed_official | 339:40bd4701f3e2 | 126 | if (tx != NC) { |
mbed_official | 339:40bd4701f3e2 | 127 | pin_mode(tx, PullUp); |
mbed_official | 339:40bd4701f3e2 | 128 | } |
mbed_official | 339:40bd4701f3e2 | 129 | if (rx != NC) { |
mbed_official | 339:40bd4701f3e2 | 130 | pin_mode(rx, PullUp); |
mbed_official | 339:40bd4701f3e2 | 131 | } |
mbed_official | 181:a4cbdfbbd2f4 | 132 | |
mbed_official | 181:a4cbdfbbd2f4 | 133 | // Configure UART |
mbed_official | 181:a4cbdfbbd2f4 | 134 | obj->baudrate = 9600; |
mbed_official | 181:a4cbdfbbd2f4 | 135 | obj->databits = UART_WORDLENGTH_8B; |
mbed_official | 181:a4cbdfbbd2f4 | 136 | obj->stopbits = UART_STOPBITS_1; |
mbed_official | 181:a4cbdfbbd2f4 | 137 | obj->parity = UART_PARITY_NONE; |
mbed_official | 201:fa203361dc70 | 138 | obj->pin_tx = tx; |
mbed_official | 201:fa203361dc70 | 139 | obj->pin_rx = rx; |
mbed_official | 181:a4cbdfbbd2f4 | 140 | |
mbed_official | 181:a4cbdfbbd2f4 | 141 | init_uart(obj); |
mbed_official | 181:a4cbdfbbd2f4 | 142 | |
mbed_official | 181:a4cbdfbbd2f4 | 143 | // For stdio management |
mbed_official | 181:a4cbdfbbd2f4 | 144 | if (obj->uart == STDIO_UART) { |
mbed_official | 181:a4cbdfbbd2f4 | 145 | stdio_uart_inited = 1; |
mbed_official | 181:a4cbdfbbd2f4 | 146 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
mbed_official | 181:a4cbdfbbd2f4 | 147 | } |
mbed_official | 181:a4cbdfbbd2f4 | 148 | } |
mbed_official | 181:a4cbdfbbd2f4 | 149 | |
mbed_official | 402:09075a3b15e3 | 150 | void serial_free(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 151 | { |
mbed_official | 201:fa203361dc70 | 152 | // Reset UART and disable clock |
mbed_official | 201:fa203361dc70 | 153 | if (obj->uart == UART_1) { |
mbed_official | 489:119543c9f674 | 154 | __HAL_RCC_USART1_FORCE_RESET(); |
mbed_official | 489:119543c9f674 | 155 | __HAL_RCC_USART1_RELEASE_RESET(); |
mbed_official | 489:119543c9f674 | 156 | __HAL_RCC_USART1_CLK_DISABLE(); |
mbed_official | 201:fa203361dc70 | 157 | } |
mbed_official | 201:fa203361dc70 | 158 | |
mbed_official | 201:fa203361dc70 | 159 | if (obj->uart == UART_2) { |
mbed_official | 489:119543c9f674 | 160 | __HAL_RCC_USART2_FORCE_RESET(); |
mbed_official | 489:119543c9f674 | 161 | __HAL_RCC_USART2_RELEASE_RESET(); |
mbed_official | 489:119543c9f674 | 162 | __HAL_RCC_USART2_CLK_DISABLE(); |
mbed_official | 201:fa203361dc70 | 163 | } |
mbed_official | 201:fa203361dc70 | 164 | |
mbed_official | 201:fa203361dc70 | 165 | if (obj->uart == LPUART_1) { |
mbed_official | 489:119543c9f674 | 166 | __HAL_RCC_LPUART1_FORCE_RESET(); |
mbed_official | 489:119543c9f674 | 167 | __HAL_RCC_LPUART1_RELEASE_RESET(); |
mbed_official | 489:119543c9f674 | 168 | __HAL_RCC_LPUART1_CLK_DISABLE(); |
mbed_official | 201:fa203361dc70 | 169 | } |
mbed_official | 201:fa203361dc70 | 170 | |
mbed_official | 489:119543c9f674 | 171 | #if defined(USART4_BASE) |
mbed_official | 489:119543c9f674 | 172 | if (obj->uart == UART_4) { |
mbed_official | 489:119543c9f674 | 173 | __HAL_RCC_USART4_FORCE_RESET(); |
mbed_official | 489:119543c9f674 | 174 | __HAL_RCC_USART4_RELEASE_RESET(); |
mbed_official | 489:119543c9f674 | 175 | __HAL_RCC_USART4_CLK_DISABLE(); |
mbed_official | 489:119543c9f674 | 176 | } |
mbed_official | 489:119543c9f674 | 177 | #endif |
mbed_official | 489:119543c9f674 | 178 | |
mbed_official | 489:119543c9f674 | 179 | #if defined(USART5_BASE) |
mbed_official | 489:119543c9f674 | 180 | if (obj->uart == UART_5) { |
mbed_official | 489:119543c9f674 | 181 | __HAL_RCC_USART5_FORCE_RESET(); |
mbed_official | 489:119543c9f674 | 182 | __HAL_RCC_USART5_RELEASE_RESET(); |
mbed_official | 489:119543c9f674 | 183 | __HAL_RCC_USART5_CLK_DISABLE(); |
mbed_official | 489:119543c9f674 | 184 | } |
mbed_official | 489:119543c9f674 | 185 | #endif |
mbed_official | 489:119543c9f674 | 186 | |
mbed_official | 201:fa203361dc70 | 187 | // Configure GPIOs |
mbed_official | 201:fa203361dc70 | 188 | pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
mbed_official | 201:fa203361dc70 | 189 | pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
mbed_official | 201:fa203361dc70 | 190 | |
mbed_official | 181:a4cbdfbbd2f4 | 191 | serial_irq_ids[obj->index] = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 192 | } |
mbed_official | 181:a4cbdfbbd2f4 | 193 | |
mbed_official | 402:09075a3b15e3 | 194 | void serial_baud(serial_t *obj, int baudrate) |
mbed_official | 402:09075a3b15e3 | 195 | { |
mbed_official | 181:a4cbdfbbd2f4 | 196 | obj->baudrate = baudrate; |
mbed_official | 181:a4cbdfbbd2f4 | 197 | init_uart(obj); |
mbed_official | 181:a4cbdfbbd2f4 | 198 | } |
mbed_official | 181:a4cbdfbbd2f4 | 199 | |
mbed_official | 402:09075a3b15e3 | 200 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) |
mbed_official | 402:09075a3b15e3 | 201 | { |
mbed_official | 242:7074e42da0b2 | 202 | if (data_bits == 9) { |
mbed_official | 242:7074e42da0b2 | 203 | obj->databits = UART_WORDLENGTH_9B; |
mbed_official | 242:7074e42da0b2 | 204 | } else { |
mbed_official | 181:a4cbdfbbd2f4 | 205 | obj->databits = UART_WORDLENGTH_8B; |
mbed_official | 181:a4cbdfbbd2f4 | 206 | } |
mbed_official | 181:a4cbdfbbd2f4 | 207 | |
mbed_official | 181:a4cbdfbbd2f4 | 208 | switch (parity) { |
mbed_official | 181:a4cbdfbbd2f4 | 209 | case ParityOdd: |
mbed_official | 181:a4cbdfbbd2f4 | 210 | case ParityForced0: |
mbed_official | 181:a4cbdfbbd2f4 | 211 | obj->parity = UART_PARITY_ODD; |
mbed_official | 181:a4cbdfbbd2f4 | 212 | break; |
mbed_official | 181:a4cbdfbbd2f4 | 213 | case ParityEven: |
mbed_official | 181:a4cbdfbbd2f4 | 214 | case ParityForced1: |
mbed_official | 181:a4cbdfbbd2f4 | 215 | obj->parity = UART_PARITY_EVEN; |
mbed_official | 181:a4cbdfbbd2f4 | 216 | break; |
mbed_official | 181:a4cbdfbbd2f4 | 217 | default: // ParityNone |
mbed_official | 181:a4cbdfbbd2f4 | 218 | obj->parity = UART_PARITY_NONE; |
mbed_official | 181:a4cbdfbbd2f4 | 219 | break; |
mbed_official | 181:a4cbdfbbd2f4 | 220 | } |
mbed_official | 181:a4cbdfbbd2f4 | 221 | |
mbed_official | 181:a4cbdfbbd2f4 | 222 | if (stop_bits == 2) { |
mbed_official | 181:a4cbdfbbd2f4 | 223 | obj->stopbits = UART_STOPBITS_2; |
mbed_official | 181:a4cbdfbbd2f4 | 224 | } else { |
mbed_official | 181:a4cbdfbbd2f4 | 225 | obj->stopbits = UART_STOPBITS_1; |
mbed_official | 181:a4cbdfbbd2f4 | 226 | } |
mbed_official | 181:a4cbdfbbd2f4 | 227 | |
mbed_official | 181:a4cbdfbbd2f4 | 228 | init_uart(obj); |
mbed_official | 181:a4cbdfbbd2f4 | 229 | } |
mbed_official | 181:a4cbdfbbd2f4 | 230 | |
mbed_official | 181:a4cbdfbbd2f4 | 231 | /****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 232 | * INTERRUPTS HANDLING |
mbed_official | 181:a4cbdfbbd2f4 | 233 | ******************************************************************************/ |
mbed_official | 181:a4cbdfbbd2f4 | 234 | |
mbed_official | 402:09075a3b15e3 | 235 | static void uart_irq(UARTName name, int id) |
mbed_official | 402:09075a3b15e3 | 236 | { |
mbed_official | 181:a4cbdfbbd2f4 | 237 | UartHandle.Instance = (USART_TypeDef *)name; |
mbed_official | 181:a4cbdfbbd2f4 | 238 | if (serial_irq_ids[id] != 0) { |
mbed_official | 181:a4cbdfbbd2f4 | 239 | if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) { |
mbed_official | 181:a4cbdfbbd2f4 | 240 | irq_handler(serial_irq_ids[id], TxIrq); |
mbed_official | 181:a4cbdfbbd2f4 | 241 | __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF); |
mbed_official | 181:a4cbdfbbd2f4 | 242 | } |
mbed_official | 181:a4cbdfbbd2f4 | 243 | if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) { |
mbed_official | 181:a4cbdfbbd2f4 | 244 | irq_handler(serial_irq_ids[id], RxIrq); |
mbed_official | 293:2a9cf2ed1474 | 245 | volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit |
mbed_official | 181:a4cbdfbbd2f4 | 246 | } |
mbed_official | 181:a4cbdfbbd2f4 | 247 | } |
mbed_official | 181:a4cbdfbbd2f4 | 248 | } |
mbed_official | 181:a4cbdfbbd2f4 | 249 | |
mbed_official | 402:09075a3b15e3 | 250 | static void uart1_irq(void) |
mbed_official | 402:09075a3b15e3 | 251 | { |
mbed_official | 181:a4cbdfbbd2f4 | 252 | uart_irq(UART_1, 0); |
mbed_official | 181:a4cbdfbbd2f4 | 253 | } |
mbed_official | 201:fa203361dc70 | 254 | |
mbed_official | 402:09075a3b15e3 | 255 | static void uart2_irq(void) |
mbed_official | 402:09075a3b15e3 | 256 | { |
mbed_official | 181:a4cbdfbbd2f4 | 257 | uart_irq(UART_2, 1); |
mbed_official | 181:a4cbdfbbd2f4 | 258 | } |
mbed_official | 201:fa203361dc70 | 259 | |
mbed_official | 402:09075a3b15e3 | 260 | static void lpuart1_irq(void) |
mbed_official | 402:09075a3b15e3 | 261 | { |
mbed_official | 181:a4cbdfbbd2f4 | 262 | uart_irq(LPUART_1, 2); |
mbed_official | 181:a4cbdfbbd2f4 | 263 | } |
mbed_official | 181:a4cbdfbbd2f4 | 264 | |
mbed_official | 489:119543c9f674 | 265 | #if defined(USART4_BASE) |
mbed_official | 489:119543c9f674 | 266 | static void uart4_irq(void) |
mbed_official | 489:119543c9f674 | 267 | { |
mbed_official | 489:119543c9f674 | 268 | uart_irq(UART_4, 3); |
mbed_official | 489:119543c9f674 | 269 | } |
mbed_official | 489:119543c9f674 | 270 | #endif |
mbed_official | 489:119543c9f674 | 271 | |
mbed_official | 489:119543c9f674 | 272 | #if defined(USART5_BASE) |
mbed_official | 489:119543c9f674 | 273 | static void uart5_irq(void) |
mbed_official | 489:119543c9f674 | 274 | { |
mbed_official | 489:119543c9f674 | 275 | uart_irq(UART_5, 4); |
mbed_official | 489:119543c9f674 | 276 | } |
mbed_official | 489:119543c9f674 | 277 | #endif |
mbed_official | 489:119543c9f674 | 278 | |
mbed_official | 402:09075a3b15e3 | 279 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) |
mbed_official | 402:09075a3b15e3 | 280 | { |
mbed_official | 181:a4cbdfbbd2f4 | 281 | irq_handler = handler; |
mbed_official | 181:a4cbdfbbd2f4 | 282 | serial_irq_ids[obj->index] = id; |
mbed_official | 181:a4cbdfbbd2f4 | 283 | } |
mbed_official | 181:a4cbdfbbd2f4 | 284 | |
mbed_official | 402:09075a3b15e3 | 285 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) |
mbed_official | 402:09075a3b15e3 | 286 | { |
mbed_official | 181:a4cbdfbbd2f4 | 287 | IRQn_Type irq_n = (IRQn_Type)0; |
mbed_official | 181:a4cbdfbbd2f4 | 288 | uint32_t vector = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 289 | |
mbed_official | 181:a4cbdfbbd2f4 | 290 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 291 | |
mbed_official | 181:a4cbdfbbd2f4 | 292 | if (obj->uart == UART_1) { |
mbed_official | 181:a4cbdfbbd2f4 | 293 | irq_n = USART1_IRQn; |
mbed_official | 181:a4cbdfbbd2f4 | 294 | vector = (uint32_t)&uart1_irq; |
mbed_official | 181:a4cbdfbbd2f4 | 295 | } |
mbed_official | 181:a4cbdfbbd2f4 | 296 | |
mbed_official | 181:a4cbdfbbd2f4 | 297 | if (obj->uart == UART_2) { |
mbed_official | 181:a4cbdfbbd2f4 | 298 | irq_n = USART2_IRQn; |
mbed_official | 181:a4cbdfbbd2f4 | 299 | vector = (uint32_t)&uart2_irq; |
mbed_official | 181:a4cbdfbbd2f4 | 300 | } |
mbed_official | 181:a4cbdfbbd2f4 | 301 | |
mbed_official | 181:a4cbdfbbd2f4 | 302 | if (obj->uart == LPUART_1) { |
mbed_official | 181:a4cbdfbbd2f4 | 303 | irq_n = RNG_LPUART1_IRQn; |
mbed_official | 181:a4cbdfbbd2f4 | 304 | vector = (uint32_t)&lpuart1_irq; |
mbed_official | 181:a4cbdfbbd2f4 | 305 | } |
mbed_official | 181:a4cbdfbbd2f4 | 306 | |
mbed_official | 489:119543c9f674 | 307 | #if defined(USART4_BASE) |
mbed_official | 489:119543c9f674 | 308 | if (obj->uart == UART_4) { |
mbed_official | 489:119543c9f674 | 309 | irq_n = USART4_5_IRQn; |
mbed_official | 489:119543c9f674 | 310 | vector = (uint32_t)&uart4_irq; |
mbed_official | 489:119543c9f674 | 311 | } |
mbed_official | 489:119543c9f674 | 312 | #endif |
mbed_official | 489:119543c9f674 | 313 | |
mbed_official | 489:119543c9f674 | 314 | #if defined(USART5_BASE) |
mbed_official | 489:119543c9f674 | 315 | if (obj->uart == UART_5) { |
mbed_official | 489:119543c9f674 | 316 | irq_n = USART4_5_IRQn; |
mbed_official | 489:119543c9f674 | 317 | vector = (uint32_t)&uart5_irq; |
mbed_official | 489:119543c9f674 | 318 | } |
mbed_official | 489:119543c9f674 | 319 | #endif |
mbed_official | 489:119543c9f674 | 320 | |
mbed_official | 181:a4cbdfbbd2f4 | 321 | if (enable) { |
mbed_official | 181:a4cbdfbbd2f4 | 322 | |
mbed_official | 181:a4cbdfbbd2f4 | 323 | if (irq == RxIrq) { |
mbed_official | 181:a4cbdfbbd2f4 | 324 | __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE); |
mbed_official | 181:a4cbdfbbd2f4 | 325 | } else { // TxIrq |
mbed_official | 181:a4cbdfbbd2f4 | 326 | __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC); |
mbed_official | 181:a4cbdfbbd2f4 | 327 | } |
mbed_official | 181:a4cbdfbbd2f4 | 328 | |
mbed_official | 181:a4cbdfbbd2f4 | 329 | NVIC_SetVector(irq_n, vector); |
mbed_official | 181:a4cbdfbbd2f4 | 330 | NVIC_EnableIRQ(irq_n); |
mbed_official | 181:a4cbdfbbd2f4 | 331 | |
mbed_official | 181:a4cbdfbbd2f4 | 332 | } else { // disable |
mbed_official | 181:a4cbdfbbd2f4 | 333 | |
mbed_official | 181:a4cbdfbbd2f4 | 334 | int all_disabled = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 335 | |
mbed_official | 181:a4cbdfbbd2f4 | 336 | if (irq == RxIrq) { |
mbed_official | 181:a4cbdfbbd2f4 | 337 | __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE); |
mbed_official | 181:a4cbdfbbd2f4 | 338 | // Check if TxIrq is disabled too |
mbed_official | 293:2a9cf2ed1474 | 339 | if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1; |
mbed_official | 181:a4cbdfbbd2f4 | 340 | } else { // TxIrq |
mbed_official | 293:2a9cf2ed1474 | 341 | __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC); |
mbed_official | 181:a4cbdfbbd2f4 | 342 | // Check if RxIrq is disabled too |
mbed_official | 181:a4cbdfbbd2f4 | 343 | if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1; |
mbed_official | 181:a4cbdfbbd2f4 | 344 | } |
mbed_official | 181:a4cbdfbbd2f4 | 345 | |
mbed_official | 181:a4cbdfbbd2f4 | 346 | if (all_disabled) NVIC_DisableIRQ(irq_n); |
mbed_official | 181:a4cbdfbbd2f4 | 347 | |
mbed_official | 181:a4cbdfbbd2f4 | 348 | } |
mbed_official | 181:a4cbdfbbd2f4 | 349 | } |
mbed_official | 181:a4cbdfbbd2f4 | 350 | |
mbed_official | 181:a4cbdfbbd2f4 | 351 | /****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 352 | * READ/WRITE |
mbed_official | 181:a4cbdfbbd2f4 | 353 | ******************************************************************************/ |
mbed_official | 181:a4cbdfbbd2f4 | 354 | |
mbed_official | 402:09075a3b15e3 | 355 | int serial_getc(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 356 | { |
mbed_official | 181:a4cbdfbbd2f4 | 357 | USART_TypeDef *uart = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 358 | while (!serial_readable(obj)); |
mbed_official | 293:2a9cf2ed1474 | 359 | return (int)(uart->RDR & (uint32_t)0xFF); |
mbed_official | 181:a4cbdfbbd2f4 | 360 | } |
mbed_official | 181:a4cbdfbbd2f4 | 361 | |
mbed_official | 402:09075a3b15e3 | 362 | void serial_putc(serial_t *obj, int c) |
mbed_official | 402:09075a3b15e3 | 363 | { |
mbed_official | 181:a4cbdfbbd2f4 | 364 | USART_TypeDef *uart = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 365 | while (!serial_writable(obj)); |
mbed_official | 293:2a9cf2ed1474 | 366 | uart->TDR = (uint32_t)(c & (uint32_t)0xFF); |
mbed_official | 181:a4cbdfbbd2f4 | 367 | } |
mbed_official | 181:a4cbdfbbd2f4 | 368 | |
mbed_official | 402:09075a3b15e3 | 369 | int serial_readable(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 370 | { |
mbed_official | 181:a4cbdfbbd2f4 | 371 | int status; |
mbed_official | 181:a4cbdfbbd2f4 | 372 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 373 | // Check if data is received |
mbed_official | 181:a4cbdfbbd2f4 | 374 | status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0); |
mbed_official | 181:a4cbdfbbd2f4 | 375 | return status; |
mbed_official | 181:a4cbdfbbd2f4 | 376 | } |
mbed_official | 181:a4cbdfbbd2f4 | 377 | |
mbed_official | 402:09075a3b15e3 | 378 | int serial_writable(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 379 | { |
mbed_official | 181:a4cbdfbbd2f4 | 380 | int status; |
mbed_official | 181:a4cbdfbbd2f4 | 381 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 382 | // Check if data is transmitted |
mbed_official | 181:a4cbdfbbd2f4 | 383 | status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0); |
mbed_official | 181:a4cbdfbbd2f4 | 384 | return status; |
mbed_official | 181:a4cbdfbbd2f4 | 385 | } |
mbed_official | 181:a4cbdfbbd2f4 | 386 | |
mbed_official | 402:09075a3b15e3 | 387 | void serial_clear(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 388 | { |
mbed_official | 181:a4cbdfbbd2f4 | 389 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 390 | __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF); |
mbed_official | 181:a4cbdfbbd2f4 | 391 | __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST); |
mbed_official | 181:a4cbdfbbd2f4 | 392 | } |
mbed_official | 181:a4cbdfbbd2f4 | 393 | |
mbed_official | 402:09075a3b15e3 | 394 | void serial_pinout_tx(PinName tx) |
mbed_official | 402:09075a3b15e3 | 395 | { |
mbed_official | 181:a4cbdfbbd2f4 | 396 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 181:a4cbdfbbd2f4 | 397 | } |
mbed_official | 181:a4cbdfbbd2f4 | 398 | |
mbed_official | 402:09075a3b15e3 | 399 | void serial_break_set(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 400 | { |
mbed_official | 181:a4cbdfbbd2f4 | 401 | UartHandle.Instance = (USART_TypeDef *)(obj->uart); |
mbed_official | 181:a4cbdfbbd2f4 | 402 | __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST); |
mbed_official | 181:a4cbdfbbd2f4 | 403 | } |
mbed_official | 181:a4cbdfbbd2f4 | 404 | |
mbed_official | 402:09075a3b15e3 | 405 | void serial_break_clear(serial_t *obj) |
mbed_official | 402:09075a3b15e3 | 406 | { |
mbed_official | 181:a4cbdfbbd2f4 | 407 | } |
mbed_official | 181:a4cbdfbbd2f4 | 408 | |
mbed_official | 181:a4cbdfbbd2f4 | 409 | #endif |