MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_ARM_SSG/TARGET_MPS2/serial_api.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 2006-2015 ARM Limited
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Licensed under the Apache License, Version 2.0 (the "License");
sahilmgandhi 18:6a4db94011d3 5 * you may not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 6 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 9 *
sahilmgandhi 18:6a4db94011d3 10 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 11 * distributed under the License is distributed on an "AS IS" BASIS,
sahilmgandhi 18:6a4db94011d3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 13 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 14 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16 // math.h required for floating point operations for baud rate calculation
sahilmgandhi 18:6a4db94011d3 17 #include <math.h>
sahilmgandhi 18:6a4db94011d3 18 #include <stdio.h>
sahilmgandhi 18:6a4db94011d3 19 #include <string.h>
sahilmgandhi 18:6a4db94011d3 20 #include <stdlib.h>
sahilmgandhi 18:6a4db94011d3 21
sahilmgandhi 18:6a4db94011d3 22 #include "serial_api.h"
sahilmgandhi 18:6a4db94011d3 23 #include "cmsis.h"
sahilmgandhi 18:6a4db94011d3 24 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 25 #include "mbed_error.h"
sahilmgandhi 18:6a4db94011d3 26 #include "gpio_api.h"
sahilmgandhi 18:6a4db94011d3 27
sahilmgandhi 18:6a4db94011d3 28 /******************************************************************************
sahilmgandhi 18:6a4db94011d3 29 * INITIALIZATION
sahilmgandhi 18:6a4db94011d3 30 ******************************************************************************/
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 static const PinMap PinMap_UART_TX[] = {
sahilmgandhi 18:6a4db94011d3 33 {USBTX , UART_0, 0},
sahilmgandhi 18:6a4db94011d3 34 {XB_TX , UART_1, 0},
sahilmgandhi 18:6a4db94011d3 35 {SH0_TX , UART_2, 0},
sahilmgandhi 18:6a4db94011d3 36 {SH1_TX , UART_3, 0},
sahilmgandhi 18:6a4db94011d3 37 {NC , NC , 0}
sahilmgandhi 18:6a4db94011d3 38 };
sahilmgandhi 18:6a4db94011d3 39
sahilmgandhi 18:6a4db94011d3 40 static const PinMap PinMap_UART_RX[] = {
sahilmgandhi 18:6a4db94011d3 41 {USBRX , UART_0, 0},
sahilmgandhi 18:6a4db94011d3 42 {XB_RX , UART_1, 0},
sahilmgandhi 18:6a4db94011d3 43 {SH0_RX , UART_2, 0},
sahilmgandhi 18:6a4db94011d3 44 {SH1_RX , UART_3, 0},
sahilmgandhi 18:6a4db94011d3 45 {NC , NC , 0}
sahilmgandhi 18:6a4db94011d3 46 };
sahilmgandhi 18:6a4db94011d3 47
sahilmgandhi 18:6a4db94011d3 48 #define UART_NUM 4
sahilmgandhi 18:6a4db94011d3 49
sahilmgandhi 18:6a4db94011d3 50 static uart_irq_handler irq_handler;
sahilmgandhi 18:6a4db94011d3 51
sahilmgandhi 18:6a4db94011d3 52 int stdio_uart_inited = 0;
sahilmgandhi 18:6a4db94011d3 53 serial_t stdio_uart;
sahilmgandhi 18:6a4db94011d3 54
sahilmgandhi 18:6a4db94011d3 55 struct serial_global_data_s {
sahilmgandhi 18:6a4db94011d3 56 uint32_t serial_irq_id;
sahilmgandhi 18:6a4db94011d3 57 gpio_t sw_rts, sw_cts;
sahilmgandhi 18:6a4db94011d3 58 uint8_t count, rx_irq_set_flow, rx_irq_set_api;
sahilmgandhi 18:6a4db94011d3 59 };
sahilmgandhi 18:6a4db94011d3 60
sahilmgandhi 18:6a4db94011d3 61 static struct serial_global_data_s uart_data[UART_NUM];
sahilmgandhi 18:6a4db94011d3 62
sahilmgandhi 18:6a4db94011d3 63 void serial_init(serial_t *obj, PinName tx, PinName rx) {
sahilmgandhi 18:6a4db94011d3 64 int is_stdio_uart = 0;
sahilmgandhi 18:6a4db94011d3 65
sahilmgandhi 18:6a4db94011d3 66 // determine the UART to use
sahilmgandhi 18:6a4db94011d3 67 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
sahilmgandhi 18:6a4db94011d3 68 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
sahilmgandhi 18:6a4db94011d3 69 UARTName uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
sahilmgandhi 18:6a4db94011d3 70 if ((int)uart == NC) {
sahilmgandhi 18:6a4db94011d3 71 error("Serial pinout mapping failed");
sahilmgandhi 18:6a4db94011d3 72 }
sahilmgandhi 18:6a4db94011d3 73
sahilmgandhi 18:6a4db94011d3 74 obj->uart = (CMSDK_UART_TypeDef *)uart;
sahilmgandhi 18:6a4db94011d3 75 //set baud rate and enable Uart in normarl mode (RX and TX enabled)
sahilmgandhi 18:6a4db94011d3 76 switch (uart)
sahilmgandhi 18:6a4db94011d3 77 {
sahilmgandhi 18:6a4db94011d3 78 case UART_0:
sahilmgandhi 18:6a4db94011d3 79 {
sahilmgandhi 18:6a4db94011d3 80 CMSDK_UART0->CTRL = 0x00; // Disable UART when changing configuration
sahilmgandhi 18:6a4db94011d3 81 if((int)uart_tx != NC)
sahilmgandhi 18:6a4db94011d3 82 {
sahilmgandhi 18:6a4db94011d3 83 CMSDK_UART0->CTRL |= 0x01; // TX enable
sahilmgandhi 18:6a4db94011d3 84 } else {
sahilmgandhi 18:6a4db94011d3 85 CMSDK_UART0->CTRL &= 0xFFFE; // TX disable
sahilmgandhi 18:6a4db94011d3 86 }
sahilmgandhi 18:6a4db94011d3 87
sahilmgandhi 18:6a4db94011d3 88
sahilmgandhi 18:6a4db94011d3 89 if((int)uart_rx != NC)
sahilmgandhi 18:6a4db94011d3 90 {
sahilmgandhi 18:6a4db94011d3 91 CMSDK_UART0->CTRL |= 0x02; // RX enable
sahilmgandhi 18:6a4db94011d3 92 } else {
sahilmgandhi 18:6a4db94011d3 93 CMSDK_UART0->CTRL &= 0xFFFD; // RX disable
sahilmgandhi 18:6a4db94011d3 94 }
sahilmgandhi 18:6a4db94011d3 95
sahilmgandhi 18:6a4db94011d3 96 }
sahilmgandhi 18:6a4db94011d3 97 break;
sahilmgandhi 18:6a4db94011d3 98 case UART_1: //XBEE SOCKET UART
sahilmgandhi 18:6a4db94011d3 99 {
sahilmgandhi 18:6a4db94011d3 100 CMSDK_UART1->CTRL = 0x00; // Disable UART when changing configuration
sahilmgandhi 18:6a4db94011d3 101 if((int)tx != NC)
sahilmgandhi 18:6a4db94011d3 102 {
sahilmgandhi 18:6a4db94011d3 103 CMSDK_UART1->CTRL = 0x1; // TX enable
sahilmgandhi 18:6a4db94011d3 104 CMSDK_GPIO1->ALTFUNCSET |= 0x0100;
sahilmgandhi 18:6a4db94011d3 105 }
sahilmgandhi 18:6a4db94011d3 106 if((int)rx != NC)
sahilmgandhi 18:6a4db94011d3 107 {
sahilmgandhi 18:6a4db94011d3 108 CMSDK_UART1->CTRL |= 0x2; // RX enable
sahilmgandhi 18:6a4db94011d3 109 CMSDK_GPIO1->ALTFUNCSET |= 0x0080;
sahilmgandhi 18:6a4db94011d3 110 }
sahilmgandhi 18:6a4db94011d3 111 }
sahilmgandhi 18:6a4db94011d3 112 break;
sahilmgandhi 18:6a4db94011d3 113 case UART_2: //Sheild0 UART
sahilmgandhi 18:6a4db94011d3 114 {
sahilmgandhi 18:6a4db94011d3 115 CMSDK_UART3->CTRL = 0x00; // Disable UART when changing configuration
sahilmgandhi 18:6a4db94011d3 116 if((int)tx != NC)
sahilmgandhi 18:6a4db94011d3 117 {
sahilmgandhi 18:6a4db94011d3 118 CMSDK_UART3->CTRL = 0x1; // TX enable
sahilmgandhi 18:6a4db94011d3 119 CMSDK_GPIO0->ALTFUNCSET |= 0x0010;
sahilmgandhi 18:6a4db94011d3 120 }
sahilmgandhi 18:6a4db94011d3 121 if((int)rx != NC)
sahilmgandhi 18:6a4db94011d3 122 {
sahilmgandhi 18:6a4db94011d3 123 CMSDK_UART3->CTRL |= 0x2; // RX enable
sahilmgandhi 18:6a4db94011d3 124 CMSDK_GPIO0->ALTFUNCSET |= 0x0001;
sahilmgandhi 18:6a4db94011d3 125 }
sahilmgandhi 18:6a4db94011d3 126 }
sahilmgandhi 18:6a4db94011d3 127 break;
sahilmgandhi 18:6a4db94011d3 128 case UART_3: //Sheild1 UART
sahilmgandhi 18:6a4db94011d3 129 {
sahilmgandhi 18:6a4db94011d3 130 CMSDK_UART4->CTRL = 0x00; // Disable UART when changing configuration
sahilmgandhi 18:6a4db94011d3 131 if((int)tx != NC)
sahilmgandhi 18:6a4db94011d3 132 {
sahilmgandhi 18:6a4db94011d3 133 CMSDK_UART4->CTRL = 0x1; // TX enable
sahilmgandhi 18:6a4db94011d3 134 CMSDK_GPIO1->ALTFUNCSET |= 0x4000;
sahilmgandhi 18:6a4db94011d3 135 }
sahilmgandhi 18:6a4db94011d3 136 if((int)rx != NC)
sahilmgandhi 18:6a4db94011d3 137 {
sahilmgandhi 18:6a4db94011d3 138 CMSDK_UART4->CTRL |= 0x2; // RX enable
sahilmgandhi 18:6a4db94011d3 139 CMSDK_GPIO1->ALTFUNCSET |= 0x0400;
sahilmgandhi 18:6a4db94011d3 140 }
sahilmgandhi 18:6a4db94011d3 141 }
sahilmgandhi 18:6a4db94011d3 142 break;
sahilmgandhi 18:6a4db94011d3 143 }
sahilmgandhi 18:6a4db94011d3 144
sahilmgandhi 18:6a4db94011d3 145 // set default baud rate and format
sahilmgandhi 18:6a4db94011d3 146 serial_baud (obj, 9600);
sahilmgandhi 18:6a4db94011d3 147
sahilmgandhi 18:6a4db94011d3 148 // pinout the chosen uart
sahilmgandhi 18:6a4db94011d3 149 pinmap_pinout(tx, PinMap_UART_TX);
sahilmgandhi 18:6a4db94011d3 150 pinmap_pinout(rx, PinMap_UART_RX);
sahilmgandhi 18:6a4db94011d3 151
sahilmgandhi 18:6a4db94011d3 152 switch (uart) {
sahilmgandhi 18:6a4db94011d3 153 case UART_0: obj->index = 0; break;
sahilmgandhi 18:6a4db94011d3 154 case UART_1: obj->index = 1; break;
sahilmgandhi 18:6a4db94011d3 155 case UART_2: obj->index = 2; break;
sahilmgandhi 18:6a4db94011d3 156 case UART_3: obj->index = 3; break;
sahilmgandhi 18:6a4db94011d3 157 }
sahilmgandhi 18:6a4db94011d3 158 uart_data[obj->index].sw_rts.pin = NC;
sahilmgandhi 18:6a4db94011d3 159 uart_data[obj->index].sw_cts.pin = NC;
sahilmgandhi 18:6a4db94011d3 160 serial_set_flow_control(obj, FlowControlNone, NC, NC);
sahilmgandhi 18:6a4db94011d3 161
sahilmgandhi 18:6a4db94011d3 162 is_stdio_uart = (uart == STDIO_UART) ? (1) : (0);
sahilmgandhi 18:6a4db94011d3 163
sahilmgandhi 18:6a4db94011d3 164 if (is_stdio_uart) {
sahilmgandhi 18:6a4db94011d3 165 stdio_uart_inited = 1;
sahilmgandhi 18:6a4db94011d3 166 memcpy(&stdio_uart, obj, sizeof(serial_t));
sahilmgandhi 18:6a4db94011d3 167 }
sahilmgandhi 18:6a4db94011d3 168 }
sahilmgandhi 18:6a4db94011d3 169
sahilmgandhi 18:6a4db94011d3 170 void serial_free(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 171 uart_data[obj->index].serial_irq_id = 0;
sahilmgandhi 18:6a4db94011d3 172 }
sahilmgandhi 18:6a4db94011d3 173
sahilmgandhi 18:6a4db94011d3 174 // serial_baud
sahilmgandhi 18:6a4db94011d3 175 // set the baud rate, taking in to account the current SystemFrequency
sahilmgandhi 18:6a4db94011d3 176 void serial_baud(serial_t *obj, int baudrate) {
sahilmgandhi 18:6a4db94011d3 177 // The MPS2 has a simple divider to control the baud rate. The formula is:
sahilmgandhi 18:6a4db94011d3 178 //
sahilmgandhi 18:6a4db94011d3 179 // Baudrate = PCLK / BAUDDIV
sahilmgandhi 18:6a4db94011d3 180 //
sahilmgandhi 18:6a4db94011d3 181 // PCLK = 25 Mhz
sahilmgandhi 18:6a4db94011d3 182 // so for a desired baud rate of 9600
sahilmgandhi 18:6a4db94011d3 183 // 25000000 / 9600 = 2604
sahilmgandhi 18:6a4db94011d3 184 //
sahilmgandhi 18:6a4db94011d3 185 //check to see if minimum baud value entered
sahilmgandhi 18:6a4db94011d3 186 int baudrate_div = 0;
sahilmgandhi 18:6a4db94011d3 187 baudrate_div = SystemCoreClock / baudrate;
sahilmgandhi 18:6a4db94011d3 188 if(baudrate >= 16){
sahilmgandhi 18:6a4db94011d3 189 switch ((int)obj->uart) {
sahilmgandhi 18:6a4db94011d3 190 case UART_0: CMSDK_UART0->BAUDDIV = baudrate_div; break;
sahilmgandhi 18:6a4db94011d3 191 case UART_1: CMSDK_UART1->BAUDDIV = baudrate_div; break;
sahilmgandhi 18:6a4db94011d3 192 case UART_2: CMSDK_UART3->BAUDDIV = baudrate_div; break;
sahilmgandhi 18:6a4db94011d3 193 case UART_3: CMSDK_UART4->BAUDDIV = baudrate_div; break;
sahilmgandhi 18:6a4db94011d3 194 default: error("serial_baud"); break;
sahilmgandhi 18:6a4db94011d3 195 }
sahilmgandhi 18:6a4db94011d3 196 } else {
sahilmgandhi 18:6a4db94011d3 197 error("serial_baud");
sahilmgandhi 18:6a4db94011d3 198 }
sahilmgandhi 18:6a4db94011d3 199
sahilmgandhi 18:6a4db94011d3 200 }
sahilmgandhi 18:6a4db94011d3 201
sahilmgandhi 18:6a4db94011d3 202 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
sahilmgandhi 18:6a4db94011d3 203 }
sahilmgandhi 18:6a4db94011d3 204
sahilmgandhi 18:6a4db94011d3 205 /******************************************************************************
sahilmgandhi 18:6a4db94011d3 206 * INTERRUPTS HANDLING
sahilmgandhi 18:6a4db94011d3 207 ******************************************************************************/
sahilmgandhi 18:6a4db94011d3 208 static inline void uart_irq(uint32_t intstatus, uint32_t index, CMSDK_UART_TypeDef *puart) {
sahilmgandhi 18:6a4db94011d3 209 SerialIrq irq_type;
sahilmgandhi 18:6a4db94011d3 210 switch (intstatus)
sahilmgandhi 18:6a4db94011d3 211 {
sahilmgandhi 18:6a4db94011d3 212 case 1:
sahilmgandhi 18:6a4db94011d3 213 {
sahilmgandhi 18:6a4db94011d3 214 irq_type = TxIrq;
sahilmgandhi 18:6a4db94011d3 215 }
sahilmgandhi 18:6a4db94011d3 216 break;
sahilmgandhi 18:6a4db94011d3 217
sahilmgandhi 18:6a4db94011d3 218 case 2:
sahilmgandhi 18:6a4db94011d3 219 {
sahilmgandhi 18:6a4db94011d3 220 irq_type = RxIrq;
sahilmgandhi 18:6a4db94011d3 221 }
sahilmgandhi 18:6a4db94011d3 222 break;
sahilmgandhi 18:6a4db94011d3 223
sahilmgandhi 18:6a4db94011d3 224 default: return;
sahilmgandhi 18:6a4db94011d3 225 } /* End of Switch */
sahilmgandhi 18:6a4db94011d3 226
sahilmgandhi 18:6a4db94011d3 227 if ((RxIrq == irq_type) && (NC != uart_data[index].sw_rts.pin))
sahilmgandhi 18:6a4db94011d3 228 {
sahilmgandhi 18:6a4db94011d3 229 gpio_write(&uart_data[index].sw_rts, 1);
sahilmgandhi 18:6a4db94011d3 230 // Disable interrupt if it wasn't enabled by other part of the application
sahilmgandhi 18:6a4db94011d3 231 if (!uart_data[index].rx_irq_set_api)
sahilmgandhi 18:6a4db94011d3 232 {
sahilmgandhi 18:6a4db94011d3 233 /* Disable Rx interrupt */
sahilmgandhi 18:6a4db94011d3 234 puart->CTRL &= ~(CMSDK_UART_CTRL_RXIRQEN_Msk);
sahilmgandhi 18:6a4db94011d3 235 }
sahilmgandhi 18:6a4db94011d3 236 }
sahilmgandhi 18:6a4db94011d3 237
sahilmgandhi 18:6a4db94011d3 238 if (uart_data[index].serial_irq_id != 0)
sahilmgandhi 18:6a4db94011d3 239 {
sahilmgandhi 18:6a4db94011d3 240 if ((irq_type != RxIrq) || (uart_data[index].rx_irq_set_api))
sahilmgandhi 18:6a4db94011d3 241 {
sahilmgandhi 18:6a4db94011d3 242 irq_handler(uart_data[index].serial_irq_id, irq_type);
sahilmgandhi 18:6a4db94011d3 243 }
sahilmgandhi 18:6a4db94011d3 244 }
sahilmgandhi 18:6a4db94011d3 245
sahilmgandhi 18:6a4db94011d3 246 if( irq_type == TxIrq )
sahilmgandhi 18:6a4db94011d3 247 {
sahilmgandhi 18:6a4db94011d3 248 /* Clear the TX interrupt Flag */
sahilmgandhi 18:6a4db94011d3 249 puart->INTCLEAR |= 0x01;
sahilmgandhi 18:6a4db94011d3 250 }
sahilmgandhi 18:6a4db94011d3 251 else
sahilmgandhi 18:6a4db94011d3 252 {
sahilmgandhi 18:6a4db94011d3 253 /* Clear the Rx interupt Flag */
sahilmgandhi 18:6a4db94011d3 254 puart->INTCLEAR |= 0x02;
sahilmgandhi 18:6a4db94011d3 255 }
sahilmgandhi 18:6a4db94011d3 256 }
sahilmgandhi 18:6a4db94011d3 257
sahilmgandhi 18:6a4db94011d3 258 void uart0_irq() {uart_irq(CMSDK_UART0->INTSTATUS & 0x3, 0, (CMSDK_UART_TypeDef*)CMSDK_UART0);}
sahilmgandhi 18:6a4db94011d3 259 void uart1_irq() {uart_irq(CMSDK_UART1->INTSTATUS & 0x3, 1, (CMSDK_UART_TypeDef*)CMSDK_UART1);}
sahilmgandhi 18:6a4db94011d3 260 void uart2_irq() {uart_irq(CMSDK_UART3->INTSTATUS & 0x3, 2, (CMSDK_UART_TypeDef*)CMSDK_UART3);}
sahilmgandhi 18:6a4db94011d3 261 void uart3_irq() {uart_irq(CMSDK_UART4->INTSTATUS & 0x3, 3, (CMSDK_UART_TypeDef*)CMSDK_UART4);}
sahilmgandhi 18:6a4db94011d3 262
sahilmgandhi 18:6a4db94011d3 263 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
sahilmgandhi 18:6a4db94011d3 264 irq_handler = handler;
sahilmgandhi 18:6a4db94011d3 265 uart_data[obj->index].serial_irq_id = id;
sahilmgandhi 18:6a4db94011d3 266 }
sahilmgandhi 18:6a4db94011d3 267
sahilmgandhi 18:6a4db94011d3 268 static void serial_irq_set_internal(serial_t *obj, SerialIrq irq, uint32_t enable) {
sahilmgandhi 18:6a4db94011d3 269 /* Declare a variable of type IRQn, initialise to 0 */
sahilmgandhi 18:6a4db94011d3 270 IRQn_Type irq_n = (IRQn_Type)0;
sahilmgandhi 18:6a4db94011d3 271 uint32_t vector = 0;
sahilmgandhi 18:6a4db94011d3 272 switch ((int)obj->uart)
sahilmgandhi 18:6a4db94011d3 273 {
sahilmgandhi 18:6a4db94011d3 274 case UART_0:
sahilmgandhi 18:6a4db94011d3 275 {
sahilmgandhi 18:6a4db94011d3 276 irq_n = (( irq == TxIrq ) ? UARTTX0_IRQn : UARTRX0_IRQn);
sahilmgandhi 18:6a4db94011d3 277 vector = (uint32_t)&uart0_irq;
sahilmgandhi 18:6a4db94011d3 278 }
sahilmgandhi 18:6a4db94011d3 279 break;
sahilmgandhi 18:6a4db94011d3 280
sahilmgandhi 18:6a4db94011d3 281 case UART_1:
sahilmgandhi 18:6a4db94011d3 282 {
sahilmgandhi 18:6a4db94011d3 283 irq_n = (( irq == TxIrq ) ? UARTTX1_IRQn : UARTRX1_IRQn);
sahilmgandhi 18:6a4db94011d3 284 vector = (uint32_t)&uart1_irq;
sahilmgandhi 18:6a4db94011d3 285 }
sahilmgandhi 18:6a4db94011d3 286 break;
sahilmgandhi 18:6a4db94011d3 287 case UART_2:
sahilmgandhi 18:6a4db94011d3 288 {
sahilmgandhi 18:6a4db94011d3 289 irq_n = (( irq == TxIrq ) ? UARTTX3_IRQn : UARTRX3_IRQn);
sahilmgandhi 18:6a4db94011d3 290 vector = (uint32_t)&uart2_irq;
sahilmgandhi 18:6a4db94011d3 291 }
sahilmgandhi 18:6a4db94011d3 292 break;
sahilmgandhi 18:6a4db94011d3 293 case UART_3:
sahilmgandhi 18:6a4db94011d3 294 {
sahilmgandhi 18:6a4db94011d3 295 irq_n = (( irq == TxIrq ) ? UARTTX4_IRQn : UARTRX4_IRQn);
sahilmgandhi 18:6a4db94011d3 296 vector = (uint32_t)&uart3_irq;
sahilmgandhi 18:6a4db94011d3 297 }
sahilmgandhi 18:6a4db94011d3 298 break;
sahilmgandhi 18:6a4db94011d3 299 }
sahilmgandhi 18:6a4db94011d3 300
sahilmgandhi 18:6a4db94011d3 301 if (enable)
sahilmgandhi 18:6a4db94011d3 302 {
sahilmgandhi 18:6a4db94011d3 303 if( irq == TxIrq )
sahilmgandhi 18:6a4db94011d3 304 {
sahilmgandhi 18:6a4db94011d3 305 /* Transmit IRQ, set appripriate enable */
sahilmgandhi 18:6a4db94011d3 306
sahilmgandhi 18:6a4db94011d3 307 /* set TX interrupt enable in CTRL REG */
sahilmgandhi 18:6a4db94011d3 308 obj->uart->CTRL |= CMSDK_UART_CTRL_TXIRQEN_Msk;
sahilmgandhi 18:6a4db94011d3 309 }
sahilmgandhi 18:6a4db94011d3 310 else
sahilmgandhi 18:6a4db94011d3 311 {
sahilmgandhi 18:6a4db94011d3 312 /* set Rx interrupt on in CTRL REG */
sahilmgandhi 18:6a4db94011d3 313 obj->uart->CTRL |= CMSDK_UART_CTRL_RXIRQEN_Msk;
sahilmgandhi 18:6a4db94011d3 314 }
sahilmgandhi 18:6a4db94011d3 315 NVIC_SetVector(irq_n, vector);
sahilmgandhi 18:6a4db94011d3 316 NVIC_EnableIRQ(irq_n);
sahilmgandhi 18:6a4db94011d3 317
sahilmgandhi 18:6a4db94011d3 318 }
sahilmgandhi 18:6a4db94011d3 319 else
sahilmgandhi 18:6a4db94011d3 320 { /* Disable IRQ */
sahilmgandhi 18:6a4db94011d3 321
sahilmgandhi 18:6a4db94011d3 322 obj->uart->CTRL &= ~(1 << (irq + 2));
sahilmgandhi 18:6a4db94011d3 323
sahilmgandhi 18:6a4db94011d3 324 NVIC_DisableIRQ(irq_n);
sahilmgandhi 18:6a4db94011d3 325 }
sahilmgandhi 18:6a4db94011d3 326 }
sahilmgandhi 18:6a4db94011d3 327
sahilmgandhi 18:6a4db94011d3 328 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
sahilmgandhi 18:6a4db94011d3 329 serial_irq_set_internal(obj, irq, enable);
sahilmgandhi 18:6a4db94011d3 330 }
sahilmgandhi 18:6a4db94011d3 331
sahilmgandhi 18:6a4db94011d3 332 /******************************************************************************
sahilmgandhi 18:6a4db94011d3 333 * READ/WRITE
sahilmgandhi 18:6a4db94011d3 334 ******************************************************************************/
sahilmgandhi 18:6a4db94011d3 335 int serial_getc(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 336 while (serial_readable(obj) == 0);
sahilmgandhi 18:6a4db94011d3 337 int data = obj->uart->DATA;
sahilmgandhi 18:6a4db94011d3 338 return data;
sahilmgandhi 18:6a4db94011d3 339 }
sahilmgandhi 18:6a4db94011d3 340
sahilmgandhi 18:6a4db94011d3 341 void serial_putc(serial_t *obj, int c) {
sahilmgandhi 18:6a4db94011d3 342 while (serial_writable(obj));
sahilmgandhi 18:6a4db94011d3 343 obj->uart->DATA = c;
sahilmgandhi 18:6a4db94011d3 344 }
sahilmgandhi 18:6a4db94011d3 345
sahilmgandhi 18:6a4db94011d3 346 int serial_readable(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 347 return obj->uart->STATE & 0x2;
sahilmgandhi 18:6a4db94011d3 348 }
sahilmgandhi 18:6a4db94011d3 349
sahilmgandhi 18:6a4db94011d3 350 int serial_writable(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 351 return obj->uart->STATE & 0x1;
sahilmgandhi 18:6a4db94011d3 352 }
sahilmgandhi 18:6a4db94011d3 353
sahilmgandhi 18:6a4db94011d3 354 void serial_clear(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 355 obj->uart->DATA = 0x00;
sahilmgandhi 18:6a4db94011d3 356 }
sahilmgandhi 18:6a4db94011d3 357
sahilmgandhi 18:6a4db94011d3 358 void serial_pinout_tx(PinName tx) {
sahilmgandhi 18:6a4db94011d3 359 pinmap_pinout(tx, PinMap_UART_TX);
sahilmgandhi 18:6a4db94011d3 360 }
sahilmgandhi 18:6a4db94011d3 361
sahilmgandhi 18:6a4db94011d3 362 void serial_break_set(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 363 }
sahilmgandhi 18:6a4db94011d3 364
sahilmgandhi 18:6a4db94011d3 365 void serial_break_clear(serial_t *obj) {
sahilmgandhi 18:6a4db94011d3 366 }
sahilmgandhi 18:6a4db94011d3 367 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) {
sahilmgandhi 18:6a4db94011d3 368 }
sahilmgandhi 18:6a4db94011d3 369