mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/serial_api.c@162:937d965048d3, 2014-04-22 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Apr 22 13:30:06 2014 +0100
- Revision:
- 162:937d965048d3
- Parent:
- 135:067cc8ba23da
- Child:
- 216:577900467c9e
Synchronized with git revision 6b9fca177ab428a93a520d666ca5b4aeb921da51
Full URL: https://github.com/mbedmicro/mbed/commit/6b9fca177ab428a93a520d666ca5b4aeb921da51/
Update gpio_irq_api.c
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 125:23cc3068a9e4 | 1 | /* mbed Microcontroller Library |
mbed_official | 125:23cc3068a9e4 | 2 | ******************************************************************************* |
mbed_official | 125:23cc3068a9e4 | 3 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 125:23cc3068a9e4 | 4 | * All rights reserved. |
mbed_official | 125:23cc3068a9e4 | 5 | * |
mbed_official | 125:23cc3068a9e4 | 6 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 125:23cc3068a9e4 | 7 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 125:23cc3068a9e4 | 8 | * |
mbed_official | 125:23cc3068a9e4 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 125:23cc3068a9e4 | 10 | * this list of conditions and the following disclaimer. |
mbed_official | 125:23cc3068a9e4 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 125:23cc3068a9e4 | 12 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 125:23cc3068a9e4 | 13 | * and/or other materials provided with the distribution. |
mbed_official | 125:23cc3068a9e4 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 125:23cc3068a9e4 | 15 | * may be used to endorse or promote products derived from this software |
mbed_official | 125:23cc3068a9e4 | 16 | * without specific prior written permission. |
mbed_official | 125:23cc3068a9e4 | 17 | * |
mbed_official | 125:23cc3068a9e4 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 125:23cc3068a9e4 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 125:23cc3068a9e4 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 125:23cc3068a9e4 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 125:23cc3068a9e4 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 125:23cc3068a9e4 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 125:23cc3068a9e4 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 125:23cc3068a9e4 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 125:23cc3068a9e4 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 125:23cc3068a9e4 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 125:23cc3068a9e4 | 28 | ******************************************************************************* |
mbed_official | 125:23cc3068a9e4 | 29 | */ |
mbed_official | 125:23cc3068a9e4 | 30 | #include "serial_api.h" |
mbed_official | 162:937d965048d3 | 31 | |
mbed_official | 162:937d965048d3 | 32 | #if DEVICE_SERIAL |
mbed_official | 162:937d965048d3 | 33 | |
mbed_official | 125:23cc3068a9e4 | 34 | #include "cmsis.h" |
mbed_official | 125:23cc3068a9e4 | 35 | #include "pinmap.h" |
mbed_official | 125:23cc3068a9e4 | 36 | #include "error.h" |
mbed_official | 125:23cc3068a9e4 | 37 | #include <string.h> |
mbed_official | 125:23cc3068a9e4 | 38 | |
mbed_official | 125:23cc3068a9e4 | 39 | static const PinMap PinMap_UART_TX[] = { |
mbed_official | 125:23cc3068a9e4 | 40 | {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 41 | {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 42 | {PA_14, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 43 | {PB_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 44 | {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 45 | {PB_9, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 46 | {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 47 | {PC_4, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 48 | {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 49 | {NC, NC, 0} |
mbed_official | 125:23cc3068a9e4 | 50 | }; |
mbed_official | 125:23cc3068a9e4 | 51 | |
mbed_official | 125:23cc3068a9e4 | 52 | static const PinMap PinMap_UART_RX[] = { |
mbed_official | 125:23cc3068a9e4 | 53 | {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 54 | {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 55 | {PA_15, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 56 | {PB_4, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 57 | {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 58 | {PB_8, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 59 | {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 60 | {PC_5, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 61 | {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)}, |
mbed_official | 125:23cc3068a9e4 | 62 | {NC, NC, 0} |
mbed_official | 125:23cc3068a9e4 | 63 | }; |
mbed_official | 125:23cc3068a9e4 | 64 | |
mbed_official | 125:23cc3068a9e4 | 65 | #define UART_NUM (2) |
mbed_official | 125:23cc3068a9e4 | 66 | |
mbed_official | 125:23cc3068a9e4 | 67 | static uint32_t serial_irq_ids[UART_NUM] = {0}; |
mbed_official | 125:23cc3068a9e4 | 68 | |
mbed_official | 125:23cc3068a9e4 | 69 | static uart_irq_handler irq_handler; |
mbed_official | 125:23cc3068a9e4 | 70 | |
mbed_official | 125:23cc3068a9e4 | 71 | int stdio_uart_inited = 0; |
mbed_official | 125:23cc3068a9e4 | 72 | serial_t stdio_uart; |
mbed_official | 125:23cc3068a9e4 | 73 | |
mbed_official | 125:23cc3068a9e4 | 74 | static void init_usart(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 75 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 76 | USART_InitTypeDef USART_InitStructure; |
mbed_official | 135:067cc8ba23da | 77 | |
mbed_official | 125:23cc3068a9e4 | 78 | USART_Cmd(usart, DISABLE); |
mbed_official | 125:23cc3068a9e4 | 79 | |
mbed_official | 125:23cc3068a9e4 | 80 | USART_InitStructure.USART_BaudRate = obj->baudrate; |
mbed_official | 125:23cc3068a9e4 | 81 | USART_InitStructure.USART_WordLength = obj->databits; |
mbed_official | 125:23cc3068a9e4 | 82 | USART_InitStructure.USART_StopBits = obj->stopbits; |
mbed_official | 125:23cc3068a9e4 | 83 | USART_InitStructure.USART_Parity = obj->parity; |
mbed_official | 125:23cc3068a9e4 | 84 | USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
mbed_official | 125:23cc3068a9e4 | 85 | USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
mbed_official | 125:23cc3068a9e4 | 86 | USART_Init(usart, &USART_InitStructure); |
mbed_official | 135:067cc8ba23da | 87 | |
mbed_official | 125:23cc3068a9e4 | 88 | USART_Cmd(usart, ENABLE); |
mbed_official | 125:23cc3068a9e4 | 89 | } |
mbed_official | 125:23cc3068a9e4 | 90 | |
mbed_official | 135:067cc8ba23da | 91 | void serial_init(serial_t *obj, PinName tx, PinName rx) { |
mbed_official | 125:23cc3068a9e4 | 92 | // Determine the UART to use |
mbed_official | 125:23cc3068a9e4 | 93 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
mbed_official | 125:23cc3068a9e4 | 94 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
mbed_official | 135:067cc8ba23da | 95 | |
mbed_official | 125:23cc3068a9e4 | 96 | // Get the peripheral name from the pin and assign it to the object |
mbed_official | 125:23cc3068a9e4 | 97 | obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
mbed_official | 125:23cc3068a9e4 | 98 | |
mbed_official | 125:23cc3068a9e4 | 99 | if (obj->uart == (UARTName)NC) { |
mbed_official | 125:23cc3068a9e4 | 100 | error("Serial pinout mapping failed"); |
mbed_official | 125:23cc3068a9e4 | 101 | } |
mbed_official | 125:23cc3068a9e4 | 102 | |
mbed_official | 125:23cc3068a9e4 | 103 | // Enable USART clock |
mbed_official | 125:23cc3068a9e4 | 104 | if (obj->uart == UART_1) { |
mbed_official | 135:067cc8ba23da | 105 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); |
mbed_official | 125:23cc3068a9e4 | 106 | } |
mbed_official | 125:23cc3068a9e4 | 107 | if (obj->uart == UART_2) { |
mbed_official | 135:067cc8ba23da | 108 | RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); |
mbed_official | 125:23cc3068a9e4 | 109 | } |
mbed_official | 125:23cc3068a9e4 | 110 | if (obj->uart == UART_3) { |
mbed_official | 135:067cc8ba23da | 111 | RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); |
mbed_official | 125:23cc3068a9e4 | 112 | } |
mbed_official | 135:067cc8ba23da | 113 | |
mbed_official | 125:23cc3068a9e4 | 114 | // Configure the UART pins |
mbed_official | 125:23cc3068a9e4 | 115 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 125:23cc3068a9e4 | 116 | pinmap_pinout(rx, PinMap_UART_RX); |
mbed_official | 125:23cc3068a9e4 | 117 | pin_mode(tx, PullUp); |
mbed_official | 125:23cc3068a9e4 | 118 | pin_mode(rx, PullUp); |
mbed_official | 125:23cc3068a9e4 | 119 | |
mbed_official | 125:23cc3068a9e4 | 120 | // Configure UART |
mbed_official | 125:23cc3068a9e4 | 121 | obj->baudrate = 9600; |
mbed_official | 125:23cc3068a9e4 | 122 | obj->databits = USART_WordLength_8b; |
mbed_official | 125:23cc3068a9e4 | 123 | obj->stopbits = USART_StopBits_1; |
mbed_official | 135:067cc8ba23da | 124 | obj->parity = USART_Parity_No; |
mbed_official | 125:23cc3068a9e4 | 125 | |
mbed_official | 125:23cc3068a9e4 | 126 | init_usart(obj); |
mbed_official | 125:23cc3068a9e4 | 127 | |
mbed_official | 125:23cc3068a9e4 | 128 | // The index is used by irq |
mbed_official | 125:23cc3068a9e4 | 129 | if (obj->uart == UART_1) obj->index = 0; |
mbed_official | 125:23cc3068a9e4 | 130 | if (obj->uart == UART_2) obj->index = 1; |
mbed_official | 125:23cc3068a9e4 | 131 | if (obj->uart == UART_3) obj->index = 2; |
mbed_official | 135:067cc8ba23da | 132 | |
mbed_official | 125:23cc3068a9e4 | 133 | // For stdio management |
mbed_official | 125:23cc3068a9e4 | 134 | if (obj->uart == STDIO_UART) { |
mbed_official | 125:23cc3068a9e4 | 135 | stdio_uart_inited = 1; |
mbed_official | 125:23cc3068a9e4 | 136 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
mbed_official | 125:23cc3068a9e4 | 137 | } |
mbed_official | 135:067cc8ba23da | 138 | |
mbed_official | 125:23cc3068a9e4 | 139 | } |
mbed_official | 125:23cc3068a9e4 | 140 | |
mbed_official | 125:23cc3068a9e4 | 141 | void serial_free(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 142 | serial_irq_ids[obj->index] = 0; |
mbed_official | 125:23cc3068a9e4 | 143 | } |
mbed_official | 125:23cc3068a9e4 | 144 | |
mbed_official | 125:23cc3068a9e4 | 145 | void serial_baud(serial_t *obj, int baudrate) { |
mbed_official | 125:23cc3068a9e4 | 146 | obj->baudrate = baudrate; |
mbed_official | 125:23cc3068a9e4 | 147 | init_usart(obj); |
mbed_official | 125:23cc3068a9e4 | 148 | } |
mbed_official | 125:23cc3068a9e4 | 149 | |
mbed_official | 125:23cc3068a9e4 | 150 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) { |
mbed_official | 125:23cc3068a9e4 | 151 | if (data_bits == 8) { |
mbed_official | 125:23cc3068a9e4 | 152 | obj->databits = USART_WordLength_8b; |
mbed_official | 135:067cc8ba23da | 153 | } else { |
mbed_official | 125:23cc3068a9e4 | 154 | obj->databits = USART_WordLength_9b; |
mbed_official | 125:23cc3068a9e4 | 155 | } |
mbed_official | 125:23cc3068a9e4 | 156 | |
mbed_official | 125:23cc3068a9e4 | 157 | switch (parity) { |
mbed_official | 135:067cc8ba23da | 158 | case ParityOdd: |
mbed_official | 135:067cc8ba23da | 159 | case ParityForced0: |
mbed_official | 135:067cc8ba23da | 160 | obj->parity = USART_Parity_Odd; |
mbed_official | 135:067cc8ba23da | 161 | break; |
mbed_official | 135:067cc8ba23da | 162 | case ParityEven: |
mbed_official | 135:067cc8ba23da | 163 | case ParityForced1: |
mbed_official | 135:067cc8ba23da | 164 | obj->parity = USART_Parity_Even; |
mbed_official | 135:067cc8ba23da | 165 | break; |
mbed_official | 135:067cc8ba23da | 166 | default: // ParityNone |
mbed_official | 135:067cc8ba23da | 167 | obj->parity = USART_Parity_No; |
mbed_official | 135:067cc8ba23da | 168 | break; |
mbed_official | 125:23cc3068a9e4 | 169 | } |
mbed_official | 135:067cc8ba23da | 170 | |
mbed_official | 125:23cc3068a9e4 | 171 | if (stop_bits == 2) { |
mbed_official | 125:23cc3068a9e4 | 172 | obj->stopbits = USART_StopBits_2; |
mbed_official | 135:067cc8ba23da | 173 | } else { |
mbed_official | 125:23cc3068a9e4 | 174 | obj->stopbits = USART_StopBits_1; |
mbed_official | 125:23cc3068a9e4 | 175 | } |
mbed_official | 125:23cc3068a9e4 | 176 | |
mbed_official | 125:23cc3068a9e4 | 177 | init_usart(obj); |
mbed_official | 125:23cc3068a9e4 | 178 | } |
mbed_official | 125:23cc3068a9e4 | 179 | |
mbed_official | 125:23cc3068a9e4 | 180 | /****************************************************************************** |
mbed_official | 125:23cc3068a9e4 | 181 | * INTERRUPTS HANDLING |
mbed_official | 125:23cc3068a9e4 | 182 | ******************************************************************************/ |
mbed_official | 125:23cc3068a9e4 | 183 | |
mbed_official | 125:23cc3068a9e4 | 184 | // not api |
mbed_official | 125:23cc3068a9e4 | 185 | static void uart_irq(USART_TypeDef* usart, int id) { |
mbed_official | 125:23cc3068a9e4 | 186 | if (serial_irq_ids[id] != 0) { |
mbed_official | 125:23cc3068a9e4 | 187 | if (USART_GetITStatus(usart, USART_IT_TC) != RESET) { |
mbed_official | 125:23cc3068a9e4 | 188 | irq_handler(serial_irq_ids[id], TxIrq); |
mbed_official | 125:23cc3068a9e4 | 189 | USART_ClearITPendingBit(usart, USART_IT_TC); |
mbed_official | 125:23cc3068a9e4 | 190 | } |
mbed_official | 125:23cc3068a9e4 | 191 | if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) { |
mbed_official | 125:23cc3068a9e4 | 192 | irq_handler(serial_irq_ids[id], RxIrq); |
mbed_official | 125:23cc3068a9e4 | 193 | USART_ClearITPendingBit(usart, USART_IT_RXNE); |
mbed_official | 125:23cc3068a9e4 | 194 | } |
mbed_official | 125:23cc3068a9e4 | 195 | } |
mbed_official | 125:23cc3068a9e4 | 196 | } |
mbed_official | 125:23cc3068a9e4 | 197 | |
mbed_official | 135:067cc8ba23da | 198 | static void uart1_irq(void) { |
mbed_official | 135:067cc8ba23da | 199 | uart_irq((USART_TypeDef*)UART_1, 0); |
mbed_official | 135:067cc8ba23da | 200 | } |
mbed_official | 135:067cc8ba23da | 201 | static void uart2_irq(void) { |
mbed_official | 135:067cc8ba23da | 202 | uart_irq((USART_TypeDef*)UART_2, 1); |
mbed_official | 135:067cc8ba23da | 203 | } |
mbed_official | 135:067cc8ba23da | 204 | static void uart3_irq(void) { |
mbed_official | 135:067cc8ba23da | 205 | uart_irq((USART_TypeDef*)UART_3, 2); |
mbed_official | 135:067cc8ba23da | 206 | } |
mbed_official | 125:23cc3068a9e4 | 207 | |
mbed_official | 125:23cc3068a9e4 | 208 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) { |
mbed_official | 125:23cc3068a9e4 | 209 | irq_handler = handler; |
mbed_official | 125:23cc3068a9e4 | 210 | serial_irq_ids[obj->index] = id; |
mbed_official | 125:23cc3068a9e4 | 211 | } |
mbed_official | 125:23cc3068a9e4 | 212 | |
mbed_official | 125:23cc3068a9e4 | 213 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) { |
mbed_official | 125:23cc3068a9e4 | 214 | IRQn_Type irq_n = (IRQn_Type)0; |
mbed_official | 125:23cc3068a9e4 | 215 | uint32_t vector = 0; |
mbed_official | 125:23cc3068a9e4 | 216 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 217 | |
mbed_official | 125:23cc3068a9e4 | 218 | if (obj->uart == UART_1) { |
mbed_official | 135:067cc8ba23da | 219 | irq_n = USART1_IRQn; |
mbed_official | 135:067cc8ba23da | 220 | vector = (uint32_t)&uart1_irq; |
mbed_official | 125:23cc3068a9e4 | 221 | } |
mbed_official | 125:23cc3068a9e4 | 222 | |
mbed_official | 125:23cc3068a9e4 | 223 | if (obj->uart == UART_2) { |
mbed_official | 135:067cc8ba23da | 224 | irq_n = USART2_IRQn; |
mbed_official | 135:067cc8ba23da | 225 | vector = (uint32_t)&uart2_irq; |
mbed_official | 125:23cc3068a9e4 | 226 | } |
mbed_official | 125:23cc3068a9e4 | 227 | |
mbed_official | 125:23cc3068a9e4 | 228 | if (obj->uart == UART_3) { |
mbed_official | 135:067cc8ba23da | 229 | irq_n = USART3_IRQn; |
mbed_official | 135:067cc8ba23da | 230 | vector = (uint32_t)&uart3_irq; |
mbed_official | 125:23cc3068a9e4 | 231 | } |
mbed_official | 125:23cc3068a9e4 | 232 | |
mbed_official | 125:23cc3068a9e4 | 233 | if (enable) { |
mbed_official | 135:067cc8ba23da | 234 | |
mbed_official | 125:23cc3068a9e4 | 235 | if (irq == RxIrq) { |
mbed_official | 125:23cc3068a9e4 | 236 | USART_ITConfig(usart, USART_IT_RXNE, ENABLE); |
mbed_official | 135:067cc8ba23da | 237 | } else { // TxIrq |
mbed_official | 125:23cc3068a9e4 | 238 | USART_ITConfig(usart, USART_IT_TC, ENABLE); |
mbed_official | 135:067cc8ba23da | 239 | } |
mbed_official | 135:067cc8ba23da | 240 | |
mbed_official | 125:23cc3068a9e4 | 241 | NVIC_SetVector(irq_n, vector); |
mbed_official | 125:23cc3068a9e4 | 242 | NVIC_EnableIRQ(irq_n); |
mbed_official | 135:067cc8ba23da | 243 | |
mbed_official | 125:23cc3068a9e4 | 244 | } else { // disable |
mbed_official | 135:067cc8ba23da | 245 | |
mbed_official | 125:23cc3068a9e4 | 246 | int all_disabled = 0; |
mbed_official | 135:067cc8ba23da | 247 | |
mbed_official | 125:23cc3068a9e4 | 248 | if (irq == RxIrq) { |
mbed_official | 125:23cc3068a9e4 | 249 | USART_ITConfig(usart, USART_IT_RXNE, DISABLE); |
mbed_official | 125:23cc3068a9e4 | 250 | // Check if TxIrq is disabled too |
mbed_official | 125:23cc3068a9e4 | 251 | if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1; |
mbed_official | 135:067cc8ba23da | 252 | } else { // TxIrq |
mbed_official | 125:23cc3068a9e4 | 253 | USART_ITConfig(usart, USART_IT_TXE, DISABLE); |
mbed_official | 125:23cc3068a9e4 | 254 | // Check if RxIrq is disabled too |
mbed_official | 135:067cc8ba23da | 255 | if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1; |
mbed_official | 125:23cc3068a9e4 | 256 | } |
mbed_official | 135:067cc8ba23da | 257 | |
mbed_official | 125:23cc3068a9e4 | 258 | if (all_disabled) NVIC_DisableIRQ(irq_n); |
mbed_official | 135:067cc8ba23da | 259 | |
mbed_official | 135:067cc8ba23da | 260 | } |
mbed_official | 125:23cc3068a9e4 | 261 | } |
mbed_official | 125:23cc3068a9e4 | 262 | |
mbed_official | 125:23cc3068a9e4 | 263 | /****************************************************************************** |
mbed_official | 125:23cc3068a9e4 | 264 | * READ/WRITE |
mbed_official | 125:23cc3068a9e4 | 265 | ******************************************************************************/ |
mbed_official | 125:23cc3068a9e4 | 266 | |
mbed_official | 125:23cc3068a9e4 | 267 | int serial_getc(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 268 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 269 | while (!serial_readable(obj)); |
mbed_official | 125:23cc3068a9e4 | 270 | return (int)(USART_ReceiveData(usart)); |
mbed_official | 125:23cc3068a9e4 | 271 | } |
mbed_official | 125:23cc3068a9e4 | 272 | |
mbed_official | 125:23cc3068a9e4 | 273 | void serial_putc(serial_t *obj, int c) { |
mbed_official | 125:23cc3068a9e4 | 274 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 275 | while (!serial_writable(obj)); |
mbed_official | 125:23cc3068a9e4 | 276 | USART_SendData(usart, (uint16_t)c); |
mbed_official | 125:23cc3068a9e4 | 277 | } |
mbed_official | 125:23cc3068a9e4 | 278 | |
mbed_official | 125:23cc3068a9e4 | 279 | int serial_readable(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 280 | int status; |
mbed_official | 125:23cc3068a9e4 | 281 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 282 | // Check if data is received |
mbed_official | 125:23cc3068a9e4 | 283 | status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0); |
mbed_official | 125:23cc3068a9e4 | 284 | return status; |
mbed_official | 125:23cc3068a9e4 | 285 | } |
mbed_official | 125:23cc3068a9e4 | 286 | |
mbed_official | 125:23cc3068a9e4 | 287 | int serial_writable(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 288 | int status; |
mbed_official | 125:23cc3068a9e4 | 289 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 290 | // Check if data is transmitted |
mbed_official | 125:23cc3068a9e4 | 291 | status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0); |
mbed_official | 125:23cc3068a9e4 | 292 | return status; |
mbed_official | 125:23cc3068a9e4 | 293 | } |
mbed_official | 125:23cc3068a9e4 | 294 | |
mbed_official | 125:23cc3068a9e4 | 295 | void serial_clear(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 296 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 297 | USART_ClearFlag(usart, USART_FLAG_TXE); |
mbed_official | 125:23cc3068a9e4 | 298 | USART_ClearFlag(usart, USART_FLAG_RXNE); |
mbed_official | 125:23cc3068a9e4 | 299 | } |
mbed_official | 125:23cc3068a9e4 | 300 | |
mbed_official | 125:23cc3068a9e4 | 301 | void serial_pinout_tx(PinName tx) { |
mbed_official | 125:23cc3068a9e4 | 302 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 125:23cc3068a9e4 | 303 | } |
mbed_official | 125:23cc3068a9e4 | 304 | |
mbed_official | 125:23cc3068a9e4 | 305 | void serial_break_set(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 306 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 307 | USART_RequestCmd(usart, USART_Request_SBKRQ, ENABLE); |
mbed_official | 125:23cc3068a9e4 | 308 | } |
mbed_official | 125:23cc3068a9e4 | 309 | |
mbed_official | 125:23cc3068a9e4 | 310 | void serial_break_clear(serial_t *obj) { |
mbed_official | 125:23cc3068a9e4 | 311 | USART_TypeDef *usart = (USART_TypeDef *)(obj->uart); |
mbed_official | 125:23cc3068a9e4 | 312 | USART_RequestCmd(usart, USART_Request_SBKRQ, DISABLE); |
mbed_official | 125:23cc3068a9e4 | 313 | USART_ClearFlag(usart, USART_FLAG_SBK); |
mbed_official | 125:23cc3068a9e4 | 314 | } |
mbed_official | 162:937d965048d3 | 315 | |
mbed_official | 162:937d965048d3 | 316 | #endif |