shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC81X/serial_api.c@64:7b352733b00a, 2013-12-19 (annotated)

Committer:
mbed_official
Date:
Thu Dec 19 13:15:07 2013 +0000
Revision:
64:7b352733b00a
Parent:
46:bebbbd80dd87
Child:
227:7bd0639b8911
Synchronized with git revision 4b4b986cdb24f240f416b7538e9766bec33be31f



Full URL: https://github.com/mbedmicro/mbed/commit/4b4b986cdb24f240f416b7538e9766bec33be31f/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 46:bebbbd80dd87 1 /* mbed Microcontroller Library
mbed_official 46:bebbbd80dd87 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 46:bebbbd80dd87 3 *
mbed_official 46:bebbbd80dd87 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 46:bebbbd80dd87 5 * you may not use this file except in compliance with the License.
mbed_official 46:bebbbd80dd87 6 * You may obtain a copy of the License at
mbed_official 46:bebbbd80dd87 7 *
mbed_official 46:bebbbd80dd87 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 46:bebbbd80dd87 9 *
mbed_official 46:bebbbd80dd87 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 46:bebbbd80dd87 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 46:bebbbd80dd87 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 46:bebbbd80dd87 13 * See the License for the specific language governing permissions and
mbed_official 46:bebbbd80dd87 14 * limitations under the License.
mbed_official 46:bebbbd80dd87 15 */
mbed_official 46:bebbbd80dd87 16 // math.h required for floating point operations for baud rate calculation
mbed_official 46:bebbbd80dd87 17 #include <math.h>
mbed_official 46:bebbbd80dd87 18 #include <string.h>
mbed_official 46:bebbbd80dd87 19
mbed_official 46:bebbbd80dd87 20 #include "serial_api.h"
mbed_official 46:bebbbd80dd87 21 #include "cmsis.h"
mbed_official 46:bebbbd80dd87 22 #include "pinmap.h"
mbed_official 46:bebbbd80dd87 23 #include "error.h"
mbed_official 46:bebbbd80dd87 24
mbed_official 46:bebbbd80dd87 25 /******************************************************************************
mbed_official 46:bebbbd80dd87 26 * INITIALIZATION
mbed_official 46:bebbbd80dd87 27 ******************************************************************************/
mbed_official 46:bebbbd80dd87 28 #define UART_NUM 3
mbed_official 46:bebbbd80dd87 29
mbed_official 46:bebbbd80dd87 30 static const SWM_Map SWM_UART_TX[] = {
mbed_official 46:bebbbd80dd87 31 {0, 0},
mbed_official 46:bebbbd80dd87 32 {1, 8},
mbed_official 46:bebbbd80dd87 33 {2, 16},
mbed_official 46:bebbbd80dd87 34 };
mbed_official 46:bebbbd80dd87 35
mbed_official 46:bebbbd80dd87 36 static const SWM_Map SWM_UART_RX[] = {
mbed_official 46:bebbbd80dd87 37 {0, 8},
mbed_official 46:bebbbd80dd87 38 {1, 16},
mbed_official 46:bebbbd80dd87 39 {2, 24},
mbed_official 46:bebbbd80dd87 40 };
mbed_official 46:bebbbd80dd87 41
mbed_official 64:7b352733b00a 42 static const SWM_Map SWM_UART_RTS[] = {
mbed_official 64:7b352733b00a 43 {0, 16},
mbed_official 64:7b352733b00a 44 {1, 24},
mbed_official 64:7b352733b00a 45 {3, 0},
mbed_official 64:7b352733b00a 46 };
mbed_official 64:7b352733b00a 47
mbed_official 64:7b352733b00a 48 static const SWM_Map SWM_UART_CTS[] = {
mbed_official 64:7b352733b00a 49 {0, 24},
mbed_official 64:7b352733b00a 50 {2, 0},
mbed_official 64:7b352733b00a 51 {3, 8}
mbed_official 64:7b352733b00a 52 };
mbed_official 64:7b352733b00a 53
mbed_official 46:bebbbd80dd87 54 // bit flags for used UARTs
mbed_official 46:bebbbd80dd87 55 static unsigned char uart_used = 0;
mbed_official 46:bebbbd80dd87 56 static int get_available_uart(void) {
mbed_official 46:bebbbd80dd87 57 int i;
mbed_official 46:bebbbd80dd87 58 for (i=0; i<3; i++) {
mbed_official 46:bebbbd80dd87 59 if ((uart_used & (1 << i)) == 0)
mbed_official 46:bebbbd80dd87 60 return i;
mbed_official 46:bebbbd80dd87 61 }
mbed_official 46:bebbbd80dd87 62 return -1;
mbed_official 46:bebbbd80dd87 63 }
mbed_official 46:bebbbd80dd87 64
mbed_official 46:bebbbd80dd87 65 #define UART_EN (0x01<<0)
mbed_official 46:bebbbd80dd87 66
mbed_official 46:bebbbd80dd87 67 #define CTS_DELTA (0x01<<5)
mbed_official 46:bebbbd80dd87 68 #define RXBRK (0x01<<10)
mbed_official 46:bebbbd80dd87 69 #define DELTA_RXBRK (0x01<<11)
mbed_official 46:bebbbd80dd87 70
mbed_official 46:bebbbd80dd87 71 #define RXRDY (0x01<<0)
mbed_official 46:bebbbd80dd87 72 #define TXRDY (0x01<<2)
mbed_official 46:bebbbd80dd87 73
mbed_official 46:bebbbd80dd87 74 #define TXBRKEN (0x01<<1)
mbed_official 64:7b352733b00a 75 #define CTSEN (0x01<<9)
mbed_official 46:bebbbd80dd87 76
mbed_official 46:bebbbd80dd87 77 static uint32_t UARTSysClk;
mbed_official 46:bebbbd80dd87 78
mbed_official 46:bebbbd80dd87 79 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 46:bebbbd80dd87 80 static uart_irq_handler irq_handler;
mbed_official 46:bebbbd80dd87 81
mbed_official 46:bebbbd80dd87 82 int stdio_uart_inited = 0;
mbed_official 46:bebbbd80dd87 83 serial_t stdio_uart;
mbed_official 46:bebbbd80dd87 84
mbed_official 46:bebbbd80dd87 85 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 46:bebbbd80dd87 86 int is_stdio_uart = 0;
mbed_official 46:bebbbd80dd87 87
mbed_official 46:bebbbd80dd87 88 int uart_n = get_available_uart();
mbed_official 46:bebbbd80dd87 89 if (uart_n == -1) {
mbed_official 46:bebbbd80dd87 90 error("No available UART");
mbed_official 46:bebbbd80dd87 91 }
mbed_official 46:bebbbd80dd87 92 obj->index = uart_n;
mbed_official 46:bebbbd80dd87 93 obj->uart = (LPC_USART_TypeDef *)(LPC_USART0_BASE + (0x4000 * uart_n));
mbed_official 46:bebbbd80dd87 94 uart_used |= (1 << uart_n);
mbed_official 46:bebbbd80dd87 95
mbed_official 46:bebbbd80dd87 96 const SWM_Map *swm;
mbed_official 46:bebbbd80dd87 97 uint32_t regVal;
mbed_official 46:bebbbd80dd87 98
mbed_official 46:bebbbd80dd87 99 swm = &SWM_UART_TX[uart_n];
mbed_official 46:bebbbd80dd87 100 regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
mbed_official 46:bebbbd80dd87 101 LPC_SWM->PINASSIGN[swm->n] = regVal | (tx << swm->offset);
mbed_official 46:bebbbd80dd87 102
mbed_official 46:bebbbd80dd87 103 swm = &SWM_UART_RX[uart_n];
mbed_official 46:bebbbd80dd87 104 regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
mbed_official 46:bebbbd80dd87 105 LPC_SWM->PINASSIGN[swm->n] = regVal | (rx << swm->offset);
mbed_official 46:bebbbd80dd87 106
mbed_official 46:bebbbd80dd87 107 /* uart clock divided by 1 */
mbed_official 46:bebbbd80dd87 108 LPC_SYSCON->UARTCLKDIV = 1;
mbed_official 46:bebbbd80dd87 109
mbed_official 46:bebbbd80dd87 110 /* disable uart interrupts */
mbed_official 46:bebbbd80dd87 111 NVIC_DisableIRQ((IRQn_Type)(UART0_IRQn + uart_n));
mbed_official 46:bebbbd80dd87 112
mbed_official 46:bebbbd80dd87 113 /* Enable UART clock */
mbed_official 46:bebbbd80dd87 114 LPC_SYSCON->SYSAHBCLKCTRL |= (1 << (14 + uart_n));
mbed_official 46:bebbbd80dd87 115
mbed_official 46:bebbbd80dd87 116 /* Peripheral reset control to UART, a "1" bring it out of reset. */
mbed_official 46:bebbbd80dd87 117 LPC_SYSCON->PRESETCTRL &= ~(0x1 << (3 + uart_n));
mbed_official 46:bebbbd80dd87 118 LPC_SYSCON->PRESETCTRL |= (0x1 << (3 + uart_n));
mbed_official 46:bebbbd80dd87 119
mbed_official 46:bebbbd80dd87 120 UARTSysClk = SystemCoreClock / LPC_SYSCON->UARTCLKDIV;
mbed_official 46:bebbbd80dd87 121
mbed_official 46:bebbbd80dd87 122 // set default baud rate and format
mbed_official 46:bebbbd80dd87 123 serial_baud (obj, 9600);
mbed_official 46:bebbbd80dd87 124 serial_format(obj, 8, ParityNone, 1);
mbed_official 46:bebbbd80dd87 125
mbed_official 46:bebbbd80dd87 126 /* Clear all status bits. */
mbed_official 46:bebbbd80dd87 127 obj->uart->STAT = CTS_DELTA | DELTA_RXBRK;
mbed_official 46:bebbbd80dd87 128
mbed_official 46:bebbbd80dd87 129 /* enable uart interrupts */
mbed_official 46:bebbbd80dd87 130 NVIC_EnableIRQ((IRQn_Type)(UART0_IRQn + uart_n));
mbed_official 46:bebbbd80dd87 131
mbed_official 46:bebbbd80dd87 132 /* Enable UART interrupt */
mbed_official 46:bebbbd80dd87 133 // obj->uart->INTENSET = RXRDY | TXRDY | DELTA_RXBRK;
mbed_official 46:bebbbd80dd87 134
mbed_official 46:bebbbd80dd87 135 /* Enable UART */
mbed_official 46:bebbbd80dd87 136 obj->uart->CFG |= UART_EN;
mbed_official 46:bebbbd80dd87 137
mbed_official 46:bebbbd80dd87 138 is_stdio_uart = ((tx == USBTX) && (rx == USBRX));
mbed_official 46:bebbbd80dd87 139
mbed_official 46:bebbbd80dd87 140 if (is_stdio_uart) {
mbed_official 46:bebbbd80dd87 141 stdio_uart_inited = 1;
mbed_official 46:bebbbd80dd87 142 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 46:bebbbd80dd87 143 }
mbed_official 46:bebbbd80dd87 144 }
mbed_official 46:bebbbd80dd87 145
mbed_official 46:bebbbd80dd87 146 void serial_free(serial_t *obj) {
mbed_official 46:bebbbd80dd87 147 uart_used &= ~(1 << obj->index);
mbed_official 46:bebbbd80dd87 148 serial_irq_ids[obj->index] = 0;
mbed_official 46:bebbbd80dd87 149 }
mbed_official 46:bebbbd80dd87 150
mbed_official 46:bebbbd80dd87 151 // serial_baud
mbed_official 46:bebbbd80dd87 152 // set the baud rate, taking in to account the current SystemFrequency
mbed_official 46:bebbbd80dd87 153 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 46:bebbbd80dd87 154 /* Integer divider:
mbed_official 46:bebbbd80dd87 155 BRG = UARTSysClk/(Baudrate * 16) - 1
mbed_official 46:bebbbd80dd87 156
mbed_official 46:bebbbd80dd87 157 Frational divider:
mbed_official 46:bebbbd80dd87 158 FRG = ((UARTSysClk / (Baudrate * 16 * (BRG + 1))) - 1)
mbed_official 46:bebbbd80dd87 159
mbed_official 46:bebbbd80dd87 160 where
mbed_official 46:bebbbd80dd87 161 FRG = (LPC_SYSCON->UARTFRDADD + 1) / (LPC_SYSCON->UARTFRDSUB + 1)
mbed_official 46:bebbbd80dd87 162
mbed_official 46:bebbbd80dd87 163 (1) The easiest way is set SUB value to 256, -1 encoded, thus SUB
mbed_official 46:bebbbd80dd87 164 register is 0xFF.
mbed_official 46:bebbbd80dd87 165 (2) In ADD register value, depending on the value of UartSysClk,
mbed_official 46:bebbbd80dd87 166 baudrate, BRG register value, and SUB register value, be careful
mbed_official 46:bebbbd80dd87 167 about the order of multiplier and divider and make sure any
mbed_official 46:bebbbd80dd87 168 multiplier doesn't exceed 32-bit boundary and any divider doesn't get
mbed_official 46:bebbbd80dd87 169 down below one(integer 0).
mbed_official 46:bebbbd80dd87 170 (3) ADD should be always less than SUB.
mbed_official 46:bebbbd80dd87 171 */
mbed_official 46:bebbbd80dd87 172 obj->uart->BRG = UARTSysClk / 16 / baudrate - 1;
mbed_official 46:bebbbd80dd87 173
mbed_official 46:bebbbd80dd87 174 LPC_SYSCON->UARTFRGDIV = 0xFF;
mbed_official 46:bebbbd80dd87 175 LPC_SYSCON->UARTFRGMULT = ( ((UARTSysClk / 16) * (LPC_SYSCON->UARTFRGDIV + 1)) /
mbed_official 46:bebbbd80dd87 176 (baudrate * (obj->uart->BRG + 1))
mbed_official 46:bebbbd80dd87 177 ) - (LPC_SYSCON->UARTFRGDIV + 1);
mbed_official 46:bebbbd80dd87 178
mbed_official 46:bebbbd80dd87 179 }
mbed_official 46:bebbbd80dd87 180
mbed_official 46:bebbbd80dd87 181 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 46:bebbbd80dd87 182 // 0: 1 stop bits, 1: 2 stop bits
mbed_official 46:bebbbd80dd87 183 if (stop_bits != 1 && stop_bits != 2) {
mbed_official 46:bebbbd80dd87 184 error("Invalid stop bits specified");
mbed_official 46:bebbbd80dd87 185 }
mbed_official 46:bebbbd80dd87 186 stop_bits -= 1;
mbed_official 46:bebbbd80dd87 187
mbed_official 46:bebbbd80dd87 188 // 0: 7 data bits ... 2: 9 data bits
mbed_official 46:bebbbd80dd87 189 if (data_bits < 7 || data_bits > 9) {
mbed_official 46:bebbbd80dd87 190 error("Invalid number of bits (%d) in serial format, should be 7..9", data_bits);
mbed_official 46:bebbbd80dd87 191 }
mbed_official 46:bebbbd80dd87 192 data_bits -= 7;
mbed_official 46:bebbbd80dd87 193
mbed_official 46:bebbbd80dd87 194 int paritysel;
mbed_official 46:bebbbd80dd87 195 switch (parity) {
mbed_official 46:bebbbd80dd87 196 case ParityNone: paritysel = 0; break;
mbed_official 46:bebbbd80dd87 197 case ParityEven: paritysel = 2; break;
mbed_official 46:bebbbd80dd87 198 case ParityOdd : paritysel = 3; break;
mbed_official 46:bebbbd80dd87 199 default:
mbed_official 46:bebbbd80dd87 200 error("Invalid serial parity setting");
mbed_official 46:bebbbd80dd87 201 return;
mbed_official 46:bebbbd80dd87 202 }
mbed_official 46:bebbbd80dd87 203
mbed_official 46:bebbbd80dd87 204 obj->uart->CFG = (data_bits << 2)
mbed_official 46:bebbbd80dd87 205 | (paritysel << 4)
mbed_official 46:bebbbd80dd87 206 | (stop_bits << 6);
mbed_official 46:bebbbd80dd87 207 }
mbed_official 46:bebbbd80dd87 208
mbed_official 46:bebbbd80dd87 209 /******************************************************************************
mbed_official 46:bebbbd80dd87 210 * INTERRUPTS HANDLING
mbed_official 46:bebbbd80dd87 211 ******************************************************************************/
mbed_official 46:bebbbd80dd87 212 static inline void uart_irq(uint32_t iir, uint32_t index) {
mbed_official 46:bebbbd80dd87 213 // [Chapter 14] LPC17xx UART0/2/3: UARTn Interrupt Handling
mbed_official 46:bebbbd80dd87 214 SerialIrq irq_type;
mbed_official 46:bebbbd80dd87 215 switch (iir) {
mbed_official 46:bebbbd80dd87 216 case 1: irq_type = TxIrq; break;
mbed_official 46:bebbbd80dd87 217 case 2: irq_type = RxIrq; break;
mbed_official 46:bebbbd80dd87 218 default: return;
mbed_official 46:bebbbd80dd87 219 }
mbed_official 46:bebbbd80dd87 220
mbed_official 46:bebbbd80dd87 221 if (serial_irq_ids[index] != 0)
mbed_official 46:bebbbd80dd87 222 irq_handler(serial_irq_ids[index], irq_type);
mbed_official 46:bebbbd80dd87 223 }
mbed_official 46:bebbbd80dd87 224
mbed_official 46:bebbbd80dd87 225 void uart0_irq() {uart_irq((LPC_USART0->STAT & (1 << 2)) ? 2 : 1, 0);}
mbed_official 46:bebbbd80dd87 226 void uart1_irq() {uart_irq((LPC_USART1->STAT & (1 << 2)) ? 2 : 1, 1);}
mbed_official 46:bebbbd80dd87 227 void uart2_irq() {uart_irq((LPC_USART2->STAT & (1 << 2)) ? 2 : 1, 2);}
mbed_official 46:bebbbd80dd87 228
mbed_official 46:bebbbd80dd87 229 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 46:bebbbd80dd87 230 irq_handler = handler;
mbed_official 46:bebbbd80dd87 231 serial_irq_ids[obj->index] = id;
mbed_official 46:bebbbd80dd87 232 }
mbed_official 46:bebbbd80dd87 233
mbed_official 46:bebbbd80dd87 234 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 46:bebbbd80dd87 235 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 46:bebbbd80dd87 236 uint32_t vector = 0;
mbed_official 46:bebbbd80dd87 237 switch ((int)obj->uart) {
mbed_official 46:bebbbd80dd87 238 case LPC_USART0_BASE: irq_n=UART0_IRQn; vector = (uint32_t)&uart0_irq; break;
mbed_official 46:bebbbd80dd87 239 case LPC_USART1_BASE: irq_n=UART1_IRQn; vector = (uint32_t)&uart1_irq; break;
mbed_official 46:bebbbd80dd87 240 case LPC_USART2_BASE: irq_n=UART2_IRQn; vector = (uint32_t)&uart2_irq; break;
mbed_official 46:bebbbd80dd87 241 }
mbed_official 46:bebbbd80dd87 242
mbed_official 46:bebbbd80dd87 243 if (enable) {
mbed_official 46:bebbbd80dd87 244 obj->uart->INTENSET = (1 << ((irq == RxIrq) ? 0 : 2));
mbed_official 46:bebbbd80dd87 245 NVIC_SetVector(irq_n, vector);
mbed_official 46:bebbbd80dd87 246 NVIC_EnableIRQ(irq_n);
mbed_official 46:bebbbd80dd87 247 } else { // disable
mbed_official 46:bebbbd80dd87 248 int all_disabled = 0;
mbed_official 46:bebbbd80dd87 249 SerialIrq other_irq = (irq == RxIrq) ? (TxIrq) : (RxIrq);
mbed_official 46:bebbbd80dd87 250 obj->uart->INTENSET &= ~(1 << ((irq == RxIrq) ? 0 : 2));
mbed_official 46:bebbbd80dd87 251 all_disabled = (obj->uart->INTENSET & (1 << ((other_irq == RxIrq) ? 0 : 2))) == 0;
mbed_official 46:bebbbd80dd87 252 if (all_disabled)
mbed_official 46:bebbbd80dd87 253 NVIC_DisableIRQ(irq_n);
mbed_official 46:bebbbd80dd87 254 }
mbed_official 46:bebbbd80dd87 255 }
mbed_official 46:bebbbd80dd87 256
mbed_official 46:bebbbd80dd87 257 /******************************************************************************
mbed_official 46:bebbbd80dd87 258 * READ/WRITE
mbed_official 46:bebbbd80dd87 259 ******************************************************************************/
mbed_official 46:bebbbd80dd87 260 int serial_getc(serial_t *obj) {
mbed_official 46:bebbbd80dd87 261 while (!serial_readable(obj));
mbed_official 46:bebbbd80dd87 262 return obj->uart->RXDATA;
mbed_official 46:bebbbd80dd87 263 }
mbed_official 46:bebbbd80dd87 264
mbed_official 46:bebbbd80dd87 265 void serial_putc(serial_t *obj, int c) {
mbed_official 46:bebbbd80dd87 266 while (!serial_writable(obj));
mbed_official 46:bebbbd80dd87 267 obj->uart->TXDATA = c;
mbed_official 46:bebbbd80dd87 268 }
mbed_official 46:bebbbd80dd87 269
mbed_official 46:bebbbd80dd87 270 int serial_readable(serial_t *obj) {
mbed_official 46:bebbbd80dd87 271 return obj->uart->STAT & RXRDY;
mbed_official 46:bebbbd80dd87 272 }
mbed_official 46:bebbbd80dd87 273
mbed_official 46:bebbbd80dd87 274 int serial_writable(serial_t *obj) {
mbed_official 46:bebbbd80dd87 275 return obj->uart->STAT & TXRDY;
mbed_official 46:bebbbd80dd87 276 }
mbed_official 46:bebbbd80dd87 277
mbed_official 46:bebbbd80dd87 278 void serial_clear(serial_t *obj) {
mbed_official 46:bebbbd80dd87 279 // [TODO]
mbed_official 46:bebbbd80dd87 280 }
mbed_official 46:bebbbd80dd87 281
mbed_official 46:bebbbd80dd87 282 void serial_pinout_tx(PinName tx) {
mbed_official 46:bebbbd80dd87 283
mbed_official 46:bebbbd80dd87 284 }
mbed_official 46:bebbbd80dd87 285
mbed_official 46:bebbbd80dd87 286 void serial_break_set(serial_t *obj) {
mbed_official 46:bebbbd80dd87 287 obj->uart->CTRL |= TXBRKEN;
mbed_official 46:bebbbd80dd87 288 }
mbed_official 46:bebbbd80dd87 289
mbed_official 46:bebbbd80dd87 290 void serial_break_clear(serial_t *obj) {
mbed_official 46:bebbbd80dd87 291 obj->uart->CTRL &= ~TXBRKEN;
mbed_official 46:bebbbd80dd87 292 }
mbed_official 46:bebbbd80dd87 293
mbed_official 64:7b352733b00a 294 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) {
mbed_official 64:7b352733b00a 295 const SWM_Map *swm_rts, *swm_cts;
mbed_official 64:7b352733b00a 296 uint32_t regVal_rts, regVal_cts;
mbed_official 64:7b352733b00a 297
mbed_official 64:7b352733b00a 298 swm_rts = &SWM_UART_RTS[obj->index];
mbed_official 64:7b352733b00a 299 swm_cts = &SWM_UART_CTS[obj->index];
mbed_official 64:7b352733b00a 300 regVal_rts = LPC_SWM->PINASSIGN[swm_rts->n] & ~(0xFF << swm_rts->offset);
mbed_official 64:7b352733b00a 301 regVal_cts = LPC_SWM->PINASSIGN[swm_cts->n] & ~(0xFF << swm_cts->offset);
mbed_official 64:7b352733b00a 302
mbed_official 64:7b352733b00a 303 if (FlowControlNone == type) {
mbed_official 64:7b352733b00a 304 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | (0xFF << swm_rts->offset);
mbed_official 64:7b352733b00a 305 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | (0xFF << swm_cts->offset);
mbed_official 64:7b352733b00a 306 obj->uart->CFG &= ~CTSEN;
mbed_official 64:7b352733b00a 307 return;
mbed_official 64:7b352733b00a 308 }
mbed_official 64:7b352733b00a 309 if ((FlowControlRTS == type || FlowControlRTSCTS == type) && (rxflow != NC)) {
mbed_official 64:7b352733b00a 310 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | (rxflow << swm_rts->offset);
mbed_official 64:7b352733b00a 311 if (FlowControlRTS == type) {
mbed_official 64:7b352733b00a 312 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | (0xFF << swm_cts->offset);
mbed_official 64:7b352733b00a 313 obj->uart->CFG &= ~CTSEN;
mbed_official 64:7b352733b00a 314 }
mbed_official 64:7b352733b00a 315 }
mbed_official 64:7b352733b00a 316 if ((FlowControlCTS == type || FlowControlRTSCTS == type) && (txflow != NC)) {
mbed_official 64:7b352733b00a 317 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | (txflow << swm_cts->offset);
mbed_official 64:7b352733b00a 318 obj->uart->CFG |= CTSEN;
mbed_official 64:7b352733b00a 319 if (FlowControlCTS == type) {
mbed_official 64:7b352733b00a 320 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | (0xFF << swm_rts->offset);
mbed_official 64:7b352733b00a 321 }
mbed_official 64:7b352733b00a 322 }
mbed_official 64:7b352733b00a 323 }
mbed_official 64:7b352733b00a 324