mbed library with additional peripherals for ST F401 board
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This mbed LIB has additional peripherals for ST F401 board
- UART2 : PA_3 rx, PA_2 tx
- UART3 : PC_7 rx, PC_6 tx
- I2C2 : PB_3 SDA, PB_10 SCL
- I2C3 : PB_4 SDA, PA_8 SCL
targets/hal/TARGET_Freescale/TARGET_K20D5M/serial_api.c@73:299c67215126, 2014-01-14 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Jan 14 20:45:05 2014 +0000
- Revision:
- 73:299c67215126
- Parent:
- 68:41613245dfd7
Synchronized with git revision cee9a71069fc940693df076382e8f182cf1a5919
Full URL: https://github.com/mbedmicro/mbed/commit/cee9a71069fc940693df076382e8f182cf1a5919/
K20D50M target - pwm and clocks in HAL
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 68:41613245dfd7 | 1 | /* mbed Microcontroller Library |
mbed_official | 68:41613245dfd7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 68:41613245dfd7 | 3 | * |
mbed_official | 68:41613245dfd7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 68:41613245dfd7 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 68:41613245dfd7 | 6 | * You may obtain a copy of the License at |
mbed_official | 68:41613245dfd7 | 7 | * |
mbed_official | 68:41613245dfd7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 68:41613245dfd7 | 9 | * |
mbed_official | 68:41613245dfd7 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 68:41613245dfd7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 68:41613245dfd7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 68:41613245dfd7 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 68:41613245dfd7 | 14 | * limitations under the License. |
mbed_official | 68:41613245dfd7 | 15 | */ |
mbed_official | 68:41613245dfd7 | 16 | #include "serial_api.h" |
mbed_official | 68:41613245dfd7 | 17 | |
mbed_official | 68:41613245dfd7 | 18 | // math.h required for floating point operations for baud rate calculation |
mbed_official | 68:41613245dfd7 | 19 | #include <math.h> |
mbed_official | 68:41613245dfd7 | 20 | |
mbed_official | 68:41613245dfd7 | 21 | #include <string.h> |
mbed_official | 68:41613245dfd7 | 22 | |
mbed_official | 68:41613245dfd7 | 23 | #include "cmsis.h" |
mbed_official | 68:41613245dfd7 | 24 | #include "pinmap.h" |
mbed_official | 68:41613245dfd7 | 25 | #include "error.h" |
mbed_official | 68:41613245dfd7 | 26 | |
mbed_official | 68:41613245dfd7 | 27 | static const PinMap PinMap_UART_TX[] = { |
mbed_official | 68:41613245dfd7 | 28 | {PTB17, UART_0, 3}, |
mbed_official | 68:41613245dfd7 | 29 | {NC , NC , 0} |
mbed_official | 68:41613245dfd7 | 30 | }; |
mbed_official | 68:41613245dfd7 | 31 | |
mbed_official | 68:41613245dfd7 | 32 | static const PinMap PinMap_UART_RX[] = { |
mbed_official | 68:41613245dfd7 | 33 | {PTB16, UART_0, 3}, |
mbed_official | 68:41613245dfd7 | 34 | {NC , NC , 0} |
mbed_official | 68:41613245dfd7 | 35 | }; |
mbed_official | 68:41613245dfd7 | 36 | |
mbed_official | 68:41613245dfd7 | 37 | #define UART_NUM 3 |
mbed_official | 68:41613245dfd7 | 38 | |
mbed_official | 68:41613245dfd7 | 39 | static uint32_t serial_irq_ids[UART_NUM] = {0}; |
mbed_official | 68:41613245dfd7 | 40 | static uart_irq_handler irq_handler; |
mbed_official | 68:41613245dfd7 | 41 | |
mbed_official | 68:41613245dfd7 | 42 | int stdio_uart_inited = 0; |
mbed_official | 68:41613245dfd7 | 43 | serial_t stdio_uart; |
mbed_official | 68:41613245dfd7 | 44 | |
mbed_official | 68:41613245dfd7 | 45 | void serial_init(serial_t *obj, PinName tx, PinName rx) { |
mbed_official | 68:41613245dfd7 | 46 | // determine the UART to use |
mbed_official | 68:41613245dfd7 | 47 | UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); |
mbed_official | 68:41613245dfd7 | 48 | UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); |
mbed_official | 68:41613245dfd7 | 49 | UARTName uart = (UARTName)pinmap_merge(uart_tx, uart_rx); |
mbed_official | 68:41613245dfd7 | 50 | if ((int)uart == NC) |
mbed_official | 68:41613245dfd7 | 51 | error("Serial pinout mapping failed"); |
mbed_official | 68:41613245dfd7 | 52 | |
mbed_official | 68:41613245dfd7 | 53 | obj->uart = (UART_Type *)uart; |
mbed_official | 68:41613245dfd7 | 54 | // enable clk |
mbed_official | 68:41613245dfd7 | 55 | switch (uart) { |
mbed_official | 73:299c67215126 | 56 | case UART_0: SIM->SOPT2 |= SIM_SOPT2_PLLFLLSEL_MASK; |
mbed_official | 68:41613245dfd7 | 57 | SIM->SCGC5 |= SIM_SCGC5_PORTA_MASK; SIM->SCGC4 |= SIM_SCGC4_UART0_MASK; break; |
mbed_official | 68:41613245dfd7 | 58 | case UART_1: SIM->SCGC5 |= SIM_SCGC5_PORTC_MASK; SIM->SCGC4 |= SIM_SCGC4_UART1_MASK; break; |
mbed_official | 68:41613245dfd7 | 59 | case UART_2: SIM->SCGC5 |= SIM_SCGC5_PORTD_MASK; SIM->SCGC4 |= SIM_SCGC4_UART2_MASK; break; |
mbed_official | 68:41613245dfd7 | 60 | } |
mbed_official | 68:41613245dfd7 | 61 | // Disable UART before changing registers |
mbed_official | 68:41613245dfd7 | 62 | obj->uart->C2 &= ~(UART_C2_RE_MASK | UART_C2_TE_MASK); |
mbed_official | 68:41613245dfd7 | 63 | |
mbed_official | 68:41613245dfd7 | 64 | switch (uart) { |
mbed_official | 68:41613245dfd7 | 65 | case UART_0: obj->index = 0; break; |
mbed_official | 68:41613245dfd7 | 66 | case UART_1: obj->index = 1; break; |
mbed_official | 68:41613245dfd7 | 67 | case UART_2: obj->index = 2; break; |
mbed_official | 68:41613245dfd7 | 68 | } |
mbed_official | 68:41613245dfd7 | 69 | |
mbed_official | 68:41613245dfd7 | 70 | // set default baud rate and format |
mbed_official | 68:41613245dfd7 | 71 | serial_baud (obj, 9600); |
mbed_official | 68:41613245dfd7 | 72 | serial_format(obj, 8, ParityNone, 1); |
mbed_official | 68:41613245dfd7 | 73 | |
mbed_official | 68:41613245dfd7 | 74 | // pinout the chosen uart |
mbed_official | 68:41613245dfd7 | 75 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 68:41613245dfd7 | 76 | pinmap_pinout(rx, PinMap_UART_RX); |
mbed_official | 68:41613245dfd7 | 77 | |
mbed_official | 68:41613245dfd7 | 78 | // set rx/tx pins in PullUp mode |
mbed_official | 68:41613245dfd7 | 79 | pin_mode(tx, PullUp); |
mbed_official | 68:41613245dfd7 | 80 | pin_mode(rx, PullUp); |
mbed_official | 68:41613245dfd7 | 81 | |
mbed_official | 68:41613245dfd7 | 82 | obj->uart->C2 |= (UART_C2_RE_MASK | UART_C2_TE_MASK); |
mbed_official | 68:41613245dfd7 | 83 | |
mbed_official | 68:41613245dfd7 | 84 | if (uart == STDIO_UART) { |
mbed_official | 68:41613245dfd7 | 85 | stdio_uart_inited = 1; |
mbed_official | 68:41613245dfd7 | 86 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
mbed_official | 68:41613245dfd7 | 87 | } |
mbed_official | 68:41613245dfd7 | 88 | } |
mbed_official | 68:41613245dfd7 | 89 | |
mbed_official | 68:41613245dfd7 | 90 | void serial_free(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 91 | serial_irq_ids[obj->index] = 0; |
mbed_official | 68:41613245dfd7 | 92 | } |
mbed_official | 68:41613245dfd7 | 93 | |
mbed_official | 68:41613245dfd7 | 94 | void serial_baud(serial_t *obj, int baudrate) { |
mbed_official | 68:41613245dfd7 | 95 | // save C2 state |
mbed_official | 68:41613245dfd7 | 96 | uint32_t c2_state = (obj->uart->C2 & (UART_C2_RE_MASK | UART_C2_TE_MASK)); |
mbed_official | 68:41613245dfd7 | 97 | |
mbed_official | 68:41613245dfd7 | 98 | // Disable UART before changing registers |
mbed_official | 68:41613245dfd7 | 99 | obj->uart->C2 &= ~(UART_C2_RE_MASK | UART_C2_TE_MASK); |
mbed_official | 68:41613245dfd7 | 100 | |
mbed_official | 73:299c67215126 | 101 | uint32_t PCLK = (obj->uart == UART0) ? SystemCoreClock : SystemCoreClock/2; |
mbed_official | 68:41613245dfd7 | 102 | |
mbed_official | 68:41613245dfd7 | 103 | // First we check to see if the basic divide with no DivAddVal/MulVal |
mbed_official | 68:41613245dfd7 | 104 | // ratio gives us an integer result. If it does, we set DivAddVal = 0, |
mbed_official | 68:41613245dfd7 | 105 | // MulVal = 1. Otherwise, we search the valid ratio value range to find |
mbed_official | 68:41613245dfd7 | 106 | // the closest match. This could be more elegant, using search methods |
mbed_official | 68:41613245dfd7 | 107 | // and/or lookup tables, but the brute force method is not that much |
mbed_official | 68:41613245dfd7 | 108 | // slower, and is more maintainable. |
mbed_official | 68:41613245dfd7 | 109 | uint16_t DL = PCLK / (16 * baudrate); |
mbed_official | 68:41613245dfd7 | 110 | |
mbed_official | 68:41613245dfd7 | 111 | // set BDH and BDL |
mbed_official | 68:41613245dfd7 | 112 | obj->uart->BDH = (obj->uart->BDH & ~(0x1f)) | ((DL >> 8) & 0x1f); |
mbed_official | 68:41613245dfd7 | 113 | obj->uart->BDL = (obj->uart->BDL & ~(0xff)) | ((DL >> 0) & 0xff); |
mbed_official | 68:41613245dfd7 | 114 | |
mbed_official | 68:41613245dfd7 | 115 | // restore C2 state |
mbed_official | 68:41613245dfd7 | 116 | obj->uart->C2 |= c2_state; |
mbed_official | 68:41613245dfd7 | 117 | } |
mbed_official | 68:41613245dfd7 | 118 | |
mbed_official | 68:41613245dfd7 | 119 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) { |
mbed_official | 68:41613245dfd7 | 120 | |
mbed_official | 68:41613245dfd7 | 121 | // save C2 state |
mbed_official | 68:41613245dfd7 | 122 | uint32_t c2_state = (obj->uart->C2 & (UART_C2_RE_MASK | UART_C2_TE_MASK)); |
mbed_official | 68:41613245dfd7 | 123 | |
mbed_official | 68:41613245dfd7 | 124 | // Disable UART before changing registers |
mbed_official | 68:41613245dfd7 | 125 | obj->uart->C2 &= ~(UART_C2_RE_MASK | UART_C2_TE_MASK); |
mbed_official | 68:41613245dfd7 | 126 | |
mbed_official | 68:41613245dfd7 | 127 | // 8 data bits = 0 ... 9 data bits = 1 |
mbed_official | 68:41613245dfd7 | 128 | if ((data_bits < 8) || (data_bits > 9)) |
mbed_official | 68:41613245dfd7 | 129 | error("Invalid number of bits (%d) in serial format, should be 8..9\r\n", data_bits); |
mbed_official | 68:41613245dfd7 | 130 | |
mbed_official | 68:41613245dfd7 | 131 | data_bits -= 8; |
mbed_official | 68:41613245dfd7 | 132 | |
mbed_official | 68:41613245dfd7 | 133 | uint32_t parity_enable, parity_select; |
mbed_official | 68:41613245dfd7 | 134 | switch (parity) { |
mbed_official | 68:41613245dfd7 | 135 | case ParityNone: parity_enable = 0; parity_select = 0; break; |
mbed_official | 68:41613245dfd7 | 136 | case ParityOdd : parity_enable = 1; parity_select = 1; data_bits++; break; |
mbed_official | 68:41613245dfd7 | 137 | case ParityEven: parity_enable = 1; parity_select = 0; data_bits++; break; |
mbed_official | 68:41613245dfd7 | 138 | default: |
mbed_official | 68:41613245dfd7 | 139 | error("Invalid serial parity setting\r\n"); |
mbed_official | 68:41613245dfd7 | 140 | return; |
mbed_official | 68:41613245dfd7 | 141 | } |
mbed_official | 68:41613245dfd7 | 142 | |
mbed_official | 68:41613245dfd7 | 143 | // 1 stop bits = 0, 2 stop bits = 1 |
mbed_official | 68:41613245dfd7 | 144 | if ((stop_bits != 1) && (stop_bits != 2)) |
mbed_official | 68:41613245dfd7 | 145 | error("Invalid stop bits specified\r\n"); |
mbed_official | 68:41613245dfd7 | 146 | stop_bits -= 1; |
mbed_official | 68:41613245dfd7 | 147 | |
mbed_official | 68:41613245dfd7 | 148 | uint32_t m10 = 0; |
mbed_official | 68:41613245dfd7 | 149 | |
mbed_official | 68:41613245dfd7 | 150 | // 9 data bits + parity |
mbed_official | 68:41613245dfd7 | 151 | if (data_bits == 2) { |
mbed_official | 68:41613245dfd7 | 152 | // only uart0 supports 10 bit communication |
mbed_official | 68:41613245dfd7 | 153 | if (obj->index != 0) |
mbed_official | 68:41613245dfd7 | 154 | error("Invalid number of bits (9) to be used with parity\r\n"); |
mbed_official | 68:41613245dfd7 | 155 | data_bits = 0; |
mbed_official | 68:41613245dfd7 | 156 | m10 = 1; |
mbed_official | 68:41613245dfd7 | 157 | } |
mbed_official | 68:41613245dfd7 | 158 | |
mbed_official | 68:41613245dfd7 | 159 | // data bits, parity and parity mode |
mbed_official | 68:41613245dfd7 | 160 | obj->uart->C1 = ((data_bits << 4) |
mbed_official | 68:41613245dfd7 | 161 | | (parity_enable << 1) |
mbed_official | 68:41613245dfd7 | 162 | | (parity_select << 0)); |
mbed_official | 68:41613245dfd7 | 163 | |
mbed_official | 68:41613245dfd7 | 164 | //enable 10bit mode if needed |
mbed_official | 68:41613245dfd7 | 165 | if (obj->index == 0) { |
mbed_official | 68:41613245dfd7 | 166 | obj->uart->C4 &= ~UART_C4_M10_MASK; |
mbed_official | 68:41613245dfd7 | 167 | obj->uart->C4 |= (m10 << UART_C4_M10_SHIFT); |
mbed_official | 68:41613245dfd7 | 168 | } |
mbed_official | 68:41613245dfd7 | 169 | |
mbed_official | 68:41613245dfd7 | 170 | // stop bits |
mbed_official | 68:41613245dfd7 | 171 | obj->uart->BDH &= ~UART_BDH_SBR_MASK; |
mbed_official | 68:41613245dfd7 | 172 | obj->uart->BDH |= (stop_bits << UART_BDH_SBR_SHIFT); |
mbed_official | 68:41613245dfd7 | 173 | |
mbed_official | 68:41613245dfd7 | 174 | // restore C2 state |
mbed_official | 68:41613245dfd7 | 175 | obj->uart->C2 |= c2_state; |
mbed_official | 68:41613245dfd7 | 176 | } |
mbed_official | 68:41613245dfd7 | 177 | |
mbed_official | 68:41613245dfd7 | 178 | /****************************************************************************** |
mbed_official | 68:41613245dfd7 | 179 | * INTERRUPTS HANDLING |
mbed_official | 68:41613245dfd7 | 180 | ******************************************************************************/ |
mbed_official | 68:41613245dfd7 | 181 | static inline void uart_irq(uint8_t status, uint32_t index) { |
mbed_official | 68:41613245dfd7 | 182 | if (serial_irq_ids[index] != 0) { |
mbed_official | 68:41613245dfd7 | 183 | if (status & UART_S1_TDRE_MASK) |
mbed_official | 68:41613245dfd7 | 184 | irq_handler(serial_irq_ids[index], TxIrq); |
mbed_official | 68:41613245dfd7 | 185 | |
mbed_official | 68:41613245dfd7 | 186 | if (status & UART_S1_RDRF_MASK) |
mbed_official | 68:41613245dfd7 | 187 | irq_handler(serial_irq_ids[index], RxIrq); |
mbed_official | 68:41613245dfd7 | 188 | } |
mbed_official | 68:41613245dfd7 | 189 | } |
mbed_official | 68:41613245dfd7 | 190 | |
mbed_official | 68:41613245dfd7 | 191 | void uart0_irq() {uart_irq(UART0->S1, 0);} |
mbed_official | 68:41613245dfd7 | 192 | void uart1_irq() {uart_irq(UART1->S1, 1);} |
mbed_official | 68:41613245dfd7 | 193 | void uart2_irq() {uart_irq(UART2->S1, 2);} |
mbed_official | 68:41613245dfd7 | 194 | |
mbed_official | 68:41613245dfd7 | 195 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) { |
mbed_official | 68:41613245dfd7 | 196 | irq_handler = handler; |
mbed_official | 68:41613245dfd7 | 197 | serial_irq_ids[obj->index] = id; |
mbed_official | 68:41613245dfd7 | 198 | } |
mbed_official | 68:41613245dfd7 | 199 | |
mbed_official | 68:41613245dfd7 | 200 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) { |
mbed_official | 68:41613245dfd7 | 201 | IRQn_Type irq_n = (IRQn_Type)0; |
mbed_official | 68:41613245dfd7 | 202 | uint32_t vector = 0; |
mbed_official | 68:41613245dfd7 | 203 | switch ((int)obj->uart) { |
mbed_official | 68:41613245dfd7 | 204 | case UART_0: |
mbed_official | 68:41613245dfd7 | 205 | irq_n=UART0_RX_TX_IRQn; |
mbed_official | 68:41613245dfd7 | 206 | vector = (uint32_t)&uart0_irq; |
mbed_official | 68:41613245dfd7 | 207 | break; |
mbed_official | 68:41613245dfd7 | 208 | case UART_1: |
mbed_official | 68:41613245dfd7 | 209 | irq_n=UART1_RX_TX_IRQn; |
mbed_official | 68:41613245dfd7 | 210 | vector = (uint32_t)&uart1_irq; |
mbed_official | 68:41613245dfd7 | 211 | break; |
mbed_official | 68:41613245dfd7 | 212 | case UART_2: |
mbed_official | 68:41613245dfd7 | 213 | irq_n=UART2_RX_TX_IRQn; |
mbed_official | 68:41613245dfd7 | 214 | vector = (uint32_t)&uart2_irq; |
mbed_official | 68:41613245dfd7 | 215 | break; |
mbed_official | 68:41613245dfd7 | 216 | } |
mbed_official | 68:41613245dfd7 | 217 | |
mbed_official | 68:41613245dfd7 | 218 | if (enable) { |
mbed_official | 68:41613245dfd7 | 219 | switch (irq) { |
mbed_official | 68:41613245dfd7 | 220 | case RxIrq: |
mbed_official | 68:41613245dfd7 | 221 | obj->uart->C2 |= (UART_C2_RIE_MASK); |
mbed_official | 68:41613245dfd7 | 222 | break; |
mbed_official | 68:41613245dfd7 | 223 | case TxIrq: |
mbed_official | 68:41613245dfd7 | 224 | obj->uart->C2 |= (UART_C2_TIE_MASK); |
mbed_official | 68:41613245dfd7 | 225 | break; |
mbed_official | 68:41613245dfd7 | 226 | } |
mbed_official | 68:41613245dfd7 | 227 | NVIC_SetVector(irq_n, vector); |
mbed_official | 68:41613245dfd7 | 228 | NVIC_EnableIRQ(irq_n); |
mbed_official | 68:41613245dfd7 | 229 | |
mbed_official | 68:41613245dfd7 | 230 | } else { // disable |
mbed_official | 68:41613245dfd7 | 231 | int all_disabled = 0; |
mbed_official | 68:41613245dfd7 | 232 | SerialIrq other_irq = (irq == RxIrq) ? (TxIrq) : (RxIrq); |
mbed_official | 68:41613245dfd7 | 233 | switch (irq) { |
mbed_official | 68:41613245dfd7 | 234 | case RxIrq: |
mbed_official | 68:41613245dfd7 | 235 | obj->uart->C2 &= ~(UART_C2_RIE_MASK); |
mbed_official | 68:41613245dfd7 | 236 | break; |
mbed_official | 68:41613245dfd7 | 237 | case TxIrq: |
mbed_official | 68:41613245dfd7 | 238 | obj->uart->C2 &= ~(UART_C2_TIE_MASK); |
mbed_official | 68:41613245dfd7 | 239 | break; |
mbed_official | 68:41613245dfd7 | 240 | } |
mbed_official | 68:41613245dfd7 | 241 | switch (other_irq) { |
mbed_official | 68:41613245dfd7 | 242 | case RxIrq: |
mbed_official | 68:41613245dfd7 | 243 | all_disabled = (obj->uart->C2 & (UART_C2_RIE_MASK)) == 0; |
mbed_official | 68:41613245dfd7 | 244 | break; |
mbed_official | 68:41613245dfd7 | 245 | case TxIrq: |
mbed_official | 68:41613245dfd7 | 246 | all_disabled = (obj->uart->C2 & (UART_C2_TIE_MASK)) == 0; |
mbed_official | 68:41613245dfd7 | 247 | break; |
mbed_official | 68:41613245dfd7 | 248 | } |
mbed_official | 68:41613245dfd7 | 249 | if (all_disabled) |
mbed_official | 68:41613245dfd7 | 250 | NVIC_DisableIRQ(irq_n); |
mbed_official | 68:41613245dfd7 | 251 | } |
mbed_official | 68:41613245dfd7 | 252 | } |
mbed_official | 68:41613245dfd7 | 253 | |
mbed_official | 68:41613245dfd7 | 254 | int serial_getc(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 255 | while (!serial_readable(obj)); |
mbed_official | 68:41613245dfd7 | 256 | return obj->uart->D; |
mbed_official | 68:41613245dfd7 | 257 | } |
mbed_official | 68:41613245dfd7 | 258 | |
mbed_official | 68:41613245dfd7 | 259 | void serial_putc(serial_t *obj, int c) { |
mbed_official | 68:41613245dfd7 | 260 | while (!serial_writable(obj)); |
mbed_official | 68:41613245dfd7 | 261 | obj->uart->D = c; |
mbed_official | 68:41613245dfd7 | 262 | } |
mbed_official | 68:41613245dfd7 | 263 | |
mbed_official | 68:41613245dfd7 | 264 | int serial_readable(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 265 | |
mbed_official | 68:41613245dfd7 | 266 | return (obj->uart->S1 & UART_S1_RDRF_MASK); |
mbed_official | 68:41613245dfd7 | 267 | } |
mbed_official | 68:41613245dfd7 | 268 | |
mbed_official | 68:41613245dfd7 | 269 | int serial_writable(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 270 | |
mbed_official | 68:41613245dfd7 | 271 | return (obj->uart->S1 & UART_S1_TDRE_MASK); |
mbed_official | 68:41613245dfd7 | 272 | } |
mbed_official | 68:41613245dfd7 | 273 | |
mbed_official | 68:41613245dfd7 | 274 | void serial_clear(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 275 | } |
mbed_official | 68:41613245dfd7 | 276 | |
mbed_official | 68:41613245dfd7 | 277 | void serial_pinout_tx(PinName tx) { |
mbed_official | 68:41613245dfd7 | 278 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 68:41613245dfd7 | 279 | } |
mbed_official | 68:41613245dfd7 | 280 | |
mbed_official | 68:41613245dfd7 | 281 | void serial_break_set(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 282 | obj->uart->C2 |= UART_C2_SBK_MASK; |
mbed_official | 68:41613245dfd7 | 283 | } |
mbed_official | 68:41613245dfd7 | 284 | |
mbed_official | 68:41613245dfd7 | 285 | void serial_break_clear(serial_t *obj) { |
mbed_official | 68:41613245dfd7 | 286 | obj->uart->C2 &= ~UART_C2_SBK_MASK; |
mbed_official | 68:41613245dfd7 | 287 | } |
mbed_official | 68:41613245dfd7 | 288 |