Toyomasa Watarai / mbed-src

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targets/hal/TARGET_NXP/TARGET_LPC82X/serial_api.c@337:6ed01c00b962, 2014-10-06 (annotated)

Committer:
mbed_official
Date:
Mon Oct 06 10:00:08 2014 +0100
Revision:
337:6ed01c00b962
Child:
387:643a59b3dbac
Synchronized with git revision b30176a071a49d95914b97d2ab98240f3a1e2cae



Full URL: https://github.com/mbedmicro/mbed/commit/b30176a071a49d95914b97d2ab98240f3a1e2cae/



Platform: LPC824 - new platform addition

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 337:6ed01c00b962 1 /* mbed Microcontroller Library
mbed_official 337:6ed01c00b962 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 337:6ed01c00b962 3 *
mbed_official 337:6ed01c00b962 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 337:6ed01c00b962 5 * you may not use this file except in compliance with the License.
mbed_official 337:6ed01c00b962 6 * You may obtain a copy of the License at
mbed_official 337:6ed01c00b962 7 *
mbed_official 337:6ed01c00b962 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 337:6ed01c00b962 9 *
mbed_official 337:6ed01c00b962 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 337:6ed01c00b962 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 337:6ed01c00b962 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 337:6ed01c00b962 13 * See the License for the specific language governing permissions and
mbed_official 337:6ed01c00b962 14 * limitations under the License.
mbed_official 337:6ed01c00b962 15 */
mbed_official 337:6ed01c00b962 16 // math.h required for floating point operations for baud rate calculation
mbed_official 337:6ed01c00b962 17 #include "mbed_assert.h"
mbed_official 337:6ed01c00b962 18 #include <math.h>
mbed_official 337:6ed01c00b962 19 #include <string.h>
mbed_official 337:6ed01c00b962 20
mbed_official 337:6ed01c00b962 21 #include "serial_api.h"
mbed_official 337:6ed01c00b962 22 #include "cmsis.h"
mbed_official 337:6ed01c00b962 23 #include "pinmap.h"
mbed_official 337:6ed01c00b962 24 #include "mbed_error.h"
mbed_official 337:6ed01c00b962 25
mbed_official 337:6ed01c00b962 26 #if DEVICE_SERIAL
mbed_official 337:6ed01c00b962 27
mbed_official 337:6ed01c00b962 28 /******************************************************************************
mbed_official 337:6ed01c00b962 29 * INITIALIZATION
mbed_official 337:6ed01c00b962 30 ******************************************************************************/
mbed_official 337:6ed01c00b962 31 #define UART_NUM 3
mbed_official 337:6ed01c00b962 32
mbed_official 337:6ed01c00b962 33 static const SWM_Map SWM_UART_TX[] = {
mbed_official 337:6ed01c00b962 34 {0, 0},
mbed_official 337:6ed01c00b962 35 {1, 8},
mbed_official 337:6ed01c00b962 36 {2, 16},
mbed_official 337:6ed01c00b962 37 };
mbed_official 337:6ed01c00b962 38
mbed_official 337:6ed01c00b962 39 static const SWM_Map SWM_UART_RX[] = {
mbed_official 337:6ed01c00b962 40 {0, 8},
mbed_official 337:6ed01c00b962 41 {1, 16},
mbed_official 337:6ed01c00b962 42 {2, 24},
mbed_official 337:6ed01c00b962 43 };
mbed_official 337:6ed01c00b962 44
mbed_official 337:6ed01c00b962 45 static const SWM_Map SWM_UART_RTS[] = {
mbed_official 337:6ed01c00b962 46 {0, 16},
mbed_official 337:6ed01c00b962 47 {1, 24},
mbed_official 337:6ed01c00b962 48 {3, 0},
mbed_official 337:6ed01c00b962 49 };
mbed_official 337:6ed01c00b962 50
mbed_official 337:6ed01c00b962 51 static const SWM_Map SWM_UART_CTS[] = {
mbed_official 337:6ed01c00b962 52 {0, 24},
mbed_official 337:6ed01c00b962 53 {2, 0},
mbed_official 337:6ed01c00b962 54 {3, 8}
mbed_official 337:6ed01c00b962 55 };
mbed_official 337:6ed01c00b962 56
mbed_official 337:6ed01c00b962 57 // bit flags for used UARTs
mbed_official 337:6ed01c00b962 58 static unsigned char uart_used = 0;
mbed_official 337:6ed01c00b962 59
mbed_official 337:6ed01c00b962 60 static int get_available_uart(void)
mbed_official 337:6ed01c00b962 61 {
mbed_official 337:6ed01c00b962 62 int i;
mbed_official 337:6ed01c00b962 63 for (i=0; i<UART_NUM; i++) {
mbed_official 337:6ed01c00b962 64 if ((uart_used & (1 << i)) == 0)
mbed_official 337:6ed01c00b962 65 return i;
mbed_official 337:6ed01c00b962 66 }
mbed_official 337:6ed01c00b962 67 return -1;
mbed_official 337:6ed01c00b962 68 }
mbed_official 337:6ed01c00b962 69
mbed_official 337:6ed01c00b962 70 #define UART_EN (0x01<<0)
mbed_official 337:6ed01c00b962 71
mbed_official 337:6ed01c00b962 72 #define CTS_DELTA (0x01<<5)
mbed_official 337:6ed01c00b962 73 #define RXBRK (0x01<<10)
mbed_official 337:6ed01c00b962 74 #define DELTA_RXBRK (0x01<<11)
mbed_official 337:6ed01c00b962 75
mbed_official 337:6ed01c00b962 76 #define RXRDY (0x01<<0)
mbed_official 337:6ed01c00b962 77 #define TXRDY (0x01<<2)
mbed_official 337:6ed01c00b962 78
mbed_official 337:6ed01c00b962 79 #define TXBRKEN (0x01<<1)
mbed_official 337:6ed01c00b962 80 #define CTSEN (0x01<<9)
mbed_official 337:6ed01c00b962 81
mbed_official 337:6ed01c00b962 82 static uint32_t UARTSysClk;
mbed_official 337:6ed01c00b962 83
mbed_official 337:6ed01c00b962 84 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 337:6ed01c00b962 85 static uart_irq_handler irq_handler;
mbed_official 337:6ed01c00b962 86
mbed_official 337:6ed01c00b962 87 int stdio_uart_inited = 0;
mbed_official 337:6ed01c00b962 88 serial_t stdio_uart;
mbed_official 337:6ed01c00b962 89
mbed_official 337:6ed01c00b962 90 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 337:6ed01c00b962 91 {
mbed_official 337:6ed01c00b962 92 int is_stdio_uart = 0;
mbed_official 337:6ed01c00b962 93
mbed_official 337:6ed01c00b962 94 int uart_n = get_available_uart();
mbed_official 337:6ed01c00b962 95 if (uart_n == -1) {
mbed_official 337:6ed01c00b962 96 error("No available UART");
mbed_official 337:6ed01c00b962 97 }
mbed_official 337:6ed01c00b962 98 obj->index = uart_n;
mbed_official 337:6ed01c00b962 99 obj->uart = (LPC_USART0_Type *)(LPC_USART0_BASE + (0x4000 * uart_n));
mbed_official 337:6ed01c00b962 100 uart_used |= (1 << uart_n);
mbed_official 337:6ed01c00b962 101
mbed_official 337:6ed01c00b962 102 const SWM_Map *swm;
mbed_official 337:6ed01c00b962 103 uint32_t regVal;
mbed_official 337:6ed01c00b962 104
mbed_official 337:6ed01c00b962 105 swm = &SWM_UART_TX[uart_n];
mbed_official 337:6ed01c00b962 106 regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
mbed_official 337:6ed01c00b962 107 LPC_SWM->PINASSIGN[swm->n] = regVal | ((tx >> PIN_SHIFT) << swm->offset);
mbed_official 337:6ed01c00b962 108
mbed_official 337:6ed01c00b962 109 swm = &SWM_UART_RX[uart_n];
mbed_official 337:6ed01c00b962 110 regVal = LPC_SWM->PINASSIGN[swm->n] & ~(0xFF << swm->offset);
mbed_official 337:6ed01c00b962 111 LPC_SWM->PINASSIGN[swm->n] = regVal | ((rx >> PIN_SHIFT) << swm->offset);
mbed_official 337:6ed01c00b962 112
mbed_official 337:6ed01c00b962 113 /* uart clock divided by 1 */
mbed_official 337:6ed01c00b962 114 LPC_SYSCON->UARTCLKDIV = 1;
mbed_official 337:6ed01c00b962 115
mbed_official 337:6ed01c00b962 116 /* disable uart interrupts */
mbed_official 337:6ed01c00b962 117 NVIC_DisableIRQ((IRQn_Type)(UART0_IRQn + uart_n));
mbed_official 337:6ed01c00b962 118
mbed_official 337:6ed01c00b962 119 /* Enable UART clock */
mbed_official 337:6ed01c00b962 120 LPC_SYSCON->SYSAHBCLKCTRL |= (1 << (14 + uart_n));
mbed_official 337:6ed01c00b962 121
mbed_official 337:6ed01c00b962 122 /* Peripheral reset control to UART, a "1" bring it out of reset. */
mbed_official 337:6ed01c00b962 123 LPC_SYSCON->PRESETCTRL &= ~(0x1 << (3 + uart_n));
mbed_official 337:6ed01c00b962 124 LPC_SYSCON->PRESETCTRL |= (0x1 << (3 + uart_n));
mbed_official 337:6ed01c00b962 125
mbed_official 337:6ed01c00b962 126 UARTSysClk = MainClock / LPC_SYSCON->UARTCLKDIV;
mbed_official 337:6ed01c00b962 127
mbed_official 337:6ed01c00b962 128 // set default baud rate and format
mbed_official 337:6ed01c00b962 129 serial_baud (obj, 9600);
mbed_official 337:6ed01c00b962 130 serial_format(obj, 8, ParityNone, 1);
mbed_official 337:6ed01c00b962 131
mbed_official 337:6ed01c00b962 132 /* Clear all status bits. */
mbed_official 337:6ed01c00b962 133 obj->uart->STAT = CTS_DELTA | DELTA_RXBRK;
mbed_official 337:6ed01c00b962 134
mbed_official 337:6ed01c00b962 135 /* enable uart interrupts */
mbed_official 337:6ed01c00b962 136 NVIC_EnableIRQ((IRQn_Type)(UART0_IRQn + uart_n));
mbed_official 337:6ed01c00b962 137
mbed_official 337:6ed01c00b962 138 /* Enable UART */
mbed_official 337:6ed01c00b962 139 obj->uart->CFG |= UART_EN;
mbed_official 337:6ed01c00b962 140
mbed_official 337:6ed01c00b962 141 is_stdio_uart = ((tx == USBTX) && (rx == USBRX));
mbed_official 337:6ed01c00b962 142
mbed_official 337:6ed01c00b962 143 if (is_stdio_uart) {
mbed_official 337:6ed01c00b962 144 stdio_uart_inited = 1;
mbed_official 337:6ed01c00b962 145 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 337:6ed01c00b962 146 }
mbed_official 337:6ed01c00b962 147 }
mbed_official 337:6ed01c00b962 148
mbed_official 337:6ed01c00b962 149 void serial_free(serial_t *obj)
mbed_official 337:6ed01c00b962 150 {
mbed_official 337:6ed01c00b962 151 uart_used &= ~(1 << obj->index);
mbed_official 337:6ed01c00b962 152 serial_irq_ids[obj->index] = 0;
mbed_official 337:6ed01c00b962 153 }
mbed_official 337:6ed01c00b962 154
mbed_official 337:6ed01c00b962 155 void serial_baud(serial_t *obj, int baudrate)
mbed_official 337:6ed01c00b962 156 {
mbed_official 337:6ed01c00b962 157 /* Integer divider:
mbed_official 337:6ed01c00b962 158 BRG = UARTSysClk/(Baudrate * 16) - 1
mbed_official 337:6ed01c00b962 159
mbed_official 337:6ed01c00b962 160 Frational divider:
mbed_official 337:6ed01c00b962 161 FRG = ((UARTSysClk / (Baudrate * 16 * (BRG + 1))) - 1)
mbed_official 337:6ed01c00b962 162
mbed_official 337:6ed01c00b962 163 where
mbed_official 337:6ed01c00b962 164 FRG = (LPC_SYSCON->UARTFRDADD + 1) / (LPC_SYSCON->UARTFRDSUB + 1)
mbed_official 337:6ed01c00b962 165
mbed_official 337:6ed01c00b962 166 (1) The easiest way is set SUB value to 256, -1 encoded, thus SUB
mbed_official 337:6ed01c00b962 167 register is 0xFF.
mbed_official 337:6ed01c00b962 168 (2) In ADD register value, depending on the value of UartSysClk,
mbed_official 337:6ed01c00b962 169 baudrate, BRG register value, and SUB register value, be careful
mbed_official 337:6ed01c00b962 170 about the order of multiplier and divider and make sure any
mbed_official 337:6ed01c00b962 171 multiplier doesn't exceed 32-bit boundary and any divider doesn't get
mbed_official 337:6ed01c00b962 172 down below one(integer 0).
mbed_official 337:6ed01c00b962 173 (3) ADD should be always less than SUB.
mbed_official 337:6ed01c00b962 174 */
mbed_official 337:6ed01c00b962 175 obj->uart->BRG = UARTSysClk / 16 / baudrate - 1;
mbed_official 337:6ed01c00b962 176
mbed_official 337:6ed01c00b962 177 LPC_SYSCON->UARTFRGDIV = 0xFF;
mbed_official 337:6ed01c00b962 178 LPC_SYSCON->UARTFRGMULT = ( ((UARTSysClk / 16) * (LPC_SYSCON->UARTFRGDIV + 1)) /
mbed_official 337:6ed01c00b962 179 (baudrate * (obj->uart->BRG + 1))
mbed_official 337:6ed01c00b962 180 ) - (LPC_SYSCON->UARTFRGDIV + 1);
mbed_official 337:6ed01c00b962 181 }
mbed_official 337:6ed01c00b962 182
mbed_official 337:6ed01c00b962 183 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 337:6ed01c00b962 184 {
mbed_official 337:6ed01c00b962 185 // 0: 1 stop bits, 1: 2 stop bits
mbed_official 337:6ed01c00b962 186 MBED_ASSERT((stop_bits == 1) || (stop_bits == 2));
mbed_official 337:6ed01c00b962 187 MBED_ASSERT((data_bits > 6) && (data_bits < 10)); // 0: 7 data bits ... 2: 9 data bits
mbed_official 337:6ed01c00b962 188 MBED_ASSERT((parity == ParityNone) || (parity == ParityEven) || (parity == ParityOdd));
mbed_official 337:6ed01c00b962 189 stop_bits -= 1;
mbed_official 337:6ed01c00b962 190 data_bits -= 7;
mbed_official 337:6ed01c00b962 191
mbed_official 337:6ed01c00b962 192 int paritysel;
mbed_official 337:6ed01c00b962 193 switch (parity) {
mbed_official 337:6ed01c00b962 194 case ParityNone: paritysel = 0; break;
mbed_official 337:6ed01c00b962 195 case ParityEven: paritysel = 2; break;
mbed_official 337:6ed01c00b962 196 case ParityOdd : paritysel = 3; break;
mbed_official 337:6ed01c00b962 197 default:
mbed_official 337:6ed01c00b962 198 break;
mbed_official 337:6ed01c00b962 199 }
mbed_official 337:6ed01c00b962 200
mbed_official 337:6ed01c00b962 201 obj->uart->CFG = (data_bits << 2)
mbed_official 337:6ed01c00b962 202 | (paritysel << 4)
mbed_official 337:6ed01c00b962 203 | (stop_bits << 6);
mbed_official 337:6ed01c00b962 204 }
mbed_official 337:6ed01c00b962 205
mbed_official 337:6ed01c00b962 206 /******************************************************************************
mbed_official 337:6ed01c00b962 207 * INTERRUPTS HANDLING
mbed_official 337:6ed01c00b962 208 ******************************************************************************/
mbed_official 337:6ed01c00b962 209 static inline void uart_irq(uint32_t iir, uint32_t index)
mbed_official 337:6ed01c00b962 210 {
mbed_official 337:6ed01c00b962 211 SerialIrq irq_type;
mbed_official 337:6ed01c00b962 212 switch (iir) {
mbed_official 337:6ed01c00b962 213 case 1: irq_type = TxIrq; break;
mbed_official 337:6ed01c00b962 214 case 2: irq_type = RxIrq; break;
mbed_official 337:6ed01c00b962 215 default: return;
mbed_official 337:6ed01c00b962 216 }
mbed_official 337:6ed01c00b962 217
mbed_official 337:6ed01c00b962 218 if (serial_irq_ids[index] != 0)
mbed_official 337:6ed01c00b962 219 irq_handler(serial_irq_ids[index], irq_type);
mbed_official 337:6ed01c00b962 220 }
mbed_official 337:6ed01c00b962 221
mbed_official 337:6ed01c00b962 222 void uart0_irq() {uart_irq((LPC_USART0->STAT & (1 << 2)) ? 2 : 1, 0);}
mbed_official 337:6ed01c00b962 223 void uart1_irq() {uart_irq((LPC_USART1->STAT & (1 << 2)) ? 2 : 1, 1);}
mbed_official 337:6ed01c00b962 224 void uart2_irq() {uart_irq((LPC_USART2->STAT & (1 << 2)) ? 2 : 1, 2);}
mbed_official 337:6ed01c00b962 225
mbed_official 337:6ed01c00b962 226 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 337:6ed01c00b962 227 {
mbed_official 337:6ed01c00b962 228 irq_handler = handler;
mbed_official 337:6ed01c00b962 229 serial_irq_ids[obj->index] = id;
mbed_official 337:6ed01c00b962 230 }
mbed_official 337:6ed01c00b962 231
mbed_official 337:6ed01c00b962 232 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 337:6ed01c00b962 233 {
mbed_official 337:6ed01c00b962 234 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 337:6ed01c00b962 235 uint32_t vector = 0;
mbed_official 337:6ed01c00b962 236 switch ((int)obj->uart) {
mbed_official 337:6ed01c00b962 237 case LPC_USART0_BASE: irq_n=UART0_IRQn; vector = (uint32_t)&uart0_irq; break;
mbed_official 337:6ed01c00b962 238 case LPC_USART1_BASE: irq_n=UART1_IRQn; vector = (uint32_t)&uart1_irq; break;
mbed_official 337:6ed01c00b962 239 case LPC_USART2_BASE: irq_n=UART2_IRQn; vector = (uint32_t)&uart2_irq; break;
mbed_official 337:6ed01c00b962 240 }
mbed_official 337:6ed01c00b962 241
mbed_official 337:6ed01c00b962 242 if (enable) {
mbed_official 337:6ed01c00b962 243 obj->uart->INTENSET = (1 << ((irq == RxIrq) ? 0 : 2));
mbed_official 337:6ed01c00b962 244 NVIC_SetVector(irq_n, vector);
mbed_official 337:6ed01c00b962 245 NVIC_EnableIRQ(irq_n);
mbed_official 337:6ed01c00b962 246 } else { // disable
mbed_official 337:6ed01c00b962 247 int all_disabled = 0;
mbed_official 337:6ed01c00b962 248 SerialIrq other_irq = (irq == RxIrq) ? (TxIrq) : (RxIrq);
mbed_official 337:6ed01c00b962 249 obj->uart->INTENSET &= ~(1 << ((irq == RxIrq) ? 0 : 2));
mbed_official 337:6ed01c00b962 250 all_disabled = (obj->uart->INTENSET & (1 << ((other_irq == RxIrq) ? 0 : 2))) == 0;
mbed_official 337:6ed01c00b962 251 if (all_disabled)
mbed_official 337:6ed01c00b962 252 NVIC_DisableIRQ(irq_n);
mbed_official 337:6ed01c00b962 253 }
mbed_official 337:6ed01c00b962 254 }
mbed_official 337:6ed01c00b962 255
mbed_official 337:6ed01c00b962 256 /******************************************************************************
mbed_official 337:6ed01c00b962 257 * READ/WRITE
mbed_official 337:6ed01c00b962 258 ******************************************************************************/
mbed_official 337:6ed01c00b962 259 int serial_getc(serial_t *obj)
mbed_official 337:6ed01c00b962 260 {
mbed_official 337:6ed01c00b962 261 while (!serial_readable(obj));
mbed_official 337:6ed01c00b962 262 return obj->uart->RXDAT;
mbed_official 337:6ed01c00b962 263 }
mbed_official 337:6ed01c00b962 264
mbed_official 337:6ed01c00b962 265 void serial_putc(serial_t *obj, int c)
mbed_official 337:6ed01c00b962 266 {
mbed_official 337:6ed01c00b962 267 while (!serial_writable(obj));
mbed_official 337:6ed01c00b962 268 obj->uart->TXDAT = c;
mbed_official 337:6ed01c00b962 269 }
mbed_official 337:6ed01c00b962 270
mbed_official 337:6ed01c00b962 271 int serial_readable(serial_t *obj)
mbed_official 337:6ed01c00b962 272 {
mbed_official 337:6ed01c00b962 273 return obj->uart->STAT & RXRDY;
mbed_official 337:6ed01c00b962 274 }
mbed_official 337:6ed01c00b962 275
mbed_official 337:6ed01c00b962 276 int serial_writable(serial_t *obj)
mbed_official 337:6ed01c00b962 277 {
mbed_official 337:6ed01c00b962 278 return obj->uart->STAT & TXRDY;
mbed_official 337:6ed01c00b962 279 }
mbed_official 337:6ed01c00b962 280
mbed_official 337:6ed01c00b962 281 void serial_clear(serial_t *obj)
mbed_official 337:6ed01c00b962 282 {
mbed_official 337:6ed01c00b962 283 // [TODO]
mbed_official 337:6ed01c00b962 284 }
mbed_official 337:6ed01c00b962 285
mbed_official 337:6ed01c00b962 286 void serial_pinout_tx(PinName tx)
mbed_official 337:6ed01c00b962 287 {
mbed_official 337:6ed01c00b962 288
mbed_official 337:6ed01c00b962 289 }
mbed_official 337:6ed01c00b962 290
mbed_official 337:6ed01c00b962 291 void serial_break_set(serial_t *obj)
mbed_official 337:6ed01c00b962 292 {
mbed_official 337:6ed01c00b962 293 obj->uart->CTL |= TXBRKEN;
mbed_official 337:6ed01c00b962 294 }
mbed_official 337:6ed01c00b962 295
mbed_official 337:6ed01c00b962 296 void serial_break_clear(serial_t *obj)
mbed_official 337:6ed01c00b962 297 {
mbed_official 337:6ed01c00b962 298 obj->uart->CTL &= ~TXBRKEN;
mbed_official 337:6ed01c00b962 299 }
mbed_official 337:6ed01c00b962 300
mbed_official 337:6ed01c00b962 301 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
mbed_official 337:6ed01c00b962 302 {
mbed_official 337:6ed01c00b962 303 const SWM_Map *swm_rts, *swm_cts;
mbed_official 337:6ed01c00b962 304 uint32_t regVal_rts, regVal_cts;
mbed_official 337:6ed01c00b962 305
mbed_official 337:6ed01c00b962 306 swm_rts = &SWM_UART_RTS[obj->index];
mbed_official 337:6ed01c00b962 307 swm_cts = &SWM_UART_CTS[obj->index];
mbed_official 337:6ed01c00b962 308 regVal_rts = LPC_SWM->PINASSIGN[swm_rts->n] & ~(0xFF << swm_rts->offset);
mbed_official 337:6ed01c00b962 309 regVal_cts = LPC_SWM->PINASSIGN[swm_cts->n] & ~(0xFF << swm_cts->offset);
mbed_official 337:6ed01c00b962 310
mbed_official 337:6ed01c00b962 311 if (FlowControlNone == type) {
mbed_official 337:6ed01c00b962 312 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | (0xFF << swm_rts->offset);
mbed_official 337:6ed01c00b962 313 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | (0xFF << swm_cts->offset);
mbed_official 337:6ed01c00b962 314 obj->uart->CFG &= ~CTSEN;
mbed_official 337:6ed01c00b962 315 return;
mbed_official 337:6ed01c00b962 316 }
mbed_official 337:6ed01c00b962 317 if ((FlowControlRTS == type || FlowControlRTSCTS == type) && (rxflow != NC)) {
mbed_official 337:6ed01c00b962 318 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | ((rxflow >> PIN_SHIFT) << swm_rts->offset);
mbed_official 337:6ed01c00b962 319 if (FlowControlRTS == type) {
mbed_official 337:6ed01c00b962 320 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | (0xFF << swm_cts->offset);
mbed_official 337:6ed01c00b962 321 obj->uart->CFG &= ~CTSEN;
mbed_official 337:6ed01c00b962 322 }
mbed_official 337:6ed01c00b962 323 }
mbed_official 337:6ed01c00b962 324 if ((FlowControlCTS == type || FlowControlRTSCTS == type) && (txflow != NC)) {
mbed_official 337:6ed01c00b962 325 LPC_SWM->PINASSIGN[swm_cts->n] = regVal_cts | ((txflow >> PIN_SHIFT) << swm_cts->offset);
mbed_official 337:6ed01c00b962 326 obj->uart->CFG |= CTSEN;
mbed_official 337:6ed01c00b962 327 if (FlowControlCTS == type) {
mbed_official 337:6ed01c00b962 328 LPC_SWM->PINASSIGN[swm_rts->n] = regVal_rts | (0xFF << swm_rts->offset);
mbed_official 337:6ed01c00b962 329 }
mbed_official 337:6ed01c00b962 330 }
mbed_official 337:6ed01c00b962 331 }
mbed_official 337:6ed01c00b962 332
mbed_official 337:6ed01c00b962 333 #endif