These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

Committer:
frank26080115
Date:
Sun Mar 20 05:38:56 2011 +0000
Revision:
0:bf7b9fba3924

        

Who changed what in which revision?

UserRevisionLine numberNew contents of line
frank26080115 0:bf7b9fba3924 1 /***********************************************************************//**
frank26080115 0:bf7b9fba3924 2 * @file rs485_master.c
frank26080115 0:bf7b9fba3924 3 * @purpose This example used to test RS485 functionality on UART1 of
frank26080115 0:bf7b9fba3924 4 * LPC1768.In this case, RS485 function on UART1 acts as Master
frank26080115 0:bf7b9fba3924 5 * on RS485 bus.
frank26080115 0:bf7b9fba3924 6 * @version 2.0
frank26080115 0:bf7b9fba3924 7 * @date 21. May. 2010
frank26080115 0:bf7b9fba3924 8 * @author NXP MCU SW Application Team
frank26080115 0:bf7b9fba3924 9 *---------------------------------------------------------------------
frank26080115 0:bf7b9fba3924 10 * Software that is described herein is for illustrative purposes only
frank26080115 0:bf7b9fba3924 11 * which provides customers with programming information regarding the
frank26080115 0:bf7b9fba3924 12 * products. This software is supplied "AS IS" without any warranties.
frank26080115 0:bf7b9fba3924 13 * NXP Semiconductors assumes no responsibility or liability for the
frank26080115 0:bf7b9fba3924 14 * use of the software, conveys no license or title under any patent,
frank26080115 0:bf7b9fba3924 15 * copyright, or mask work right to the product. NXP Semiconductors
frank26080115 0:bf7b9fba3924 16 * reserves the right to make changes in the software without
frank26080115 0:bf7b9fba3924 17 * notification. NXP Semiconductors also make no representation or
frank26080115 0:bf7b9fba3924 18 * warranty that such application will be suitable for the specified
frank26080115 0:bf7b9fba3924 19 * use without further testing or modification.
frank26080115 0:bf7b9fba3924 20 **********************************************************************/
frank26080115 0:bf7b9fba3924 21 #include "lpc17xx_uart.h"
frank26080115 0:bf7b9fba3924 22 #include "lpc17xx_libcfg.h"
frank26080115 0:bf7b9fba3924 23 #include "lpc17xx_pinsel.h"
frank26080115 0:bf7b9fba3924 24
frank26080115 0:bf7b9fba3924 25 /* Example group ----------------------------------------------------------- */
frank26080115 0:bf7b9fba3924 26 /** @defgroup UART_RS485_Master RS485_Master
frank26080115 0:bf7b9fba3924 27 * @ingroup UART_Examples
frank26080115 0:bf7b9fba3924 28 * @{
frank26080115 0:bf7b9fba3924 29 */
frank26080115 0:bf7b9fba3924 30
frank26080115 0:bf7b9fba3924 31 /************************** PRIVATE DEFINITIONS *************************/
frank26080115 0:bf7b9fba3924 32 // Slave Address
frank26080115 0:bf7b9fba3924 33 #define SLAVE_ADDR_A 'A'
frank26080115 0:bf7b9fba3924 34 #define SLAVE_ADDR_B 'B'
frank26080115 0:bf7b9fba3924 35
frank26080115 0:bf7b9fba3924 36 /* buffer size definition */
frank26080115 0:bf7b9fba3924 37 #define UART_RING_BUFSIZE 256
frank26080115 0:bf7b9fba3924 38
frank26080115 0:bf7b9fba3924 39 /* Buf mask */
frank26080115 0:bf7b9fba3924 40 #define __BUF_MASK (UART_RING_BUFSIZE-1)
frank26080115 0:bf7b9fba3924 41 /* Check buf is full or not */
frank26080115 0:bf7b9fba3924 42 #define __BUF_IS_FULL(head, tail) ((tail&__BUF_MASK)==((head+1)&__BUF_MASK))
frank26080115 0:bf7b9fba3924 43 /* Check buf will be full in next receiving or not */
frank26080115 0:bf7b9fba3924 44 #define __BUF_WILL_FULL(head, tail) ((tail&__BUF_MASK)==((head+2)&__BUF_MASK))
frank26080115 0:bf7b9fba3924 45 /* Check buf is empty */
frank26080115 0:bf7b9fba3924 46 #define __BUF_IS_EMPTY(head, tail) ((head&__BUF_MASK)==(tail&__BUF_MASK))
frank26080115 0:bf7b9fba3924 47 /* Reset buf */
frank26080115 0:bf7b9fba3924 48 #define __BUF_RESET(bufidx) (bufidx=0)
frank26080115 0:bf7b9fba3924 49 #define __BUF_INCR(bufidx) (bufidx=(bufidx+1)&__BUF_MASK)
frank26080115 0:bf7b9fba3924 50
frank26080115 0:bf7b9fba3924 51 /************************** PRIVATE VARIABLES *************************/
frank26080115 0:bf7b9fba3924 52 uint8_t menu1[] = "Hello NXP Semiconductors \n\r";
frank26080115 0:bf7b9fba3924 53 uint8_t menu2[] = "RS485 demo in Master mode \n\r";
frank26080115 0:bf7b9fba3924 54 uint8_t send_menu[] = "Sending... \n\r";
frank26080115 0:bf7b9fba3924 55 uint8_t recv_menu[] = "Receive: ";
frank26080115 0:bf7b9fba3924 56 uint8_t p_err_menu[] = "Parity error \n\r";
frank26080115 0:bf7b9fba3924 57 uint8_t f_err_menu[] = "Frame error \n\r";
frank26080115 0:bf7b9fba3924 58 uint8_t nextline[] = "\n\r";
frank26080115 0:bf7b9fba3924 59
frank26080115 0:bf7b9fba3924 60 uint8_t slaveA_msg[] = "Msg A: Hello NXP";
frank26080115 0:bf7b9fba3924 61 uint8_t slaveB_msg[] = "Msg B: Hello NXP";
frank26080115 0:bf7b9fba3924 62 uint8_t terminator = 13;
frank26080115 0:bf7b9fba3924 63
frank26080115 0:bf7b9fba3924 64 /************************** PRIVATE TYPES *************************/
frank26080115 0:bf7b9fba3924 65 /** @brief UART Ring buffer structure */
frank26080115 0:bf7b9fba3924 66 typedef struct
frank26080115 0:bf7b9fba3924 67 {
frank26080115 0:bf7b9fba3924 68 __IO uint32_t tx_head; /*!< UART Tx ring buffer head index */
frank26080115 0:bf7b9fba3924 69 __IO uint32_t tx_tail; /*!< UART Tx ring buffer tail index */
frank26080115 0:bf7b9fba3924 70 __IO uint32_t rx_head; /*!< UART Rx ring buffer head index */
frank26080115 0:bf7b9fba3924 71 __IO uint32_t rx_tail; /*!< UART Rx ring buffer tail index */
frank26080115 0:bf7b9fba3924 72 __IO uint8_t tx[UART_RING_BUFSIZE]; /*!< UART Tx data ring buffer */
frank26080115 0:bf7b9fba3924 73 __IO uint8_t rx[UART_RING_BUFSIZE]; /*!< UART Rx data ring buffer */
frank26080115 0:bf7b9fba3924 74 } UART_RING_BUFFER_T;
frank26080115 0:bf7b9fba3924 75
frank26080115 0:bf7b9fba3924 76 /************************** PRIVATE VARIABLES *************************/
frank26080115 0:bf7b9fba3924 77 // UART Ring buffer
frank26080115 0:bf7b9fba3924 78 UART_RING_BUFFER_T rb;
frank26080115 0:bf7b9fba3924 79
frank26080115 0:bf7b9fba3924 80 /************************** PRIVATE FUNCTIONS *************************/
frank26080115 0:bf7b9fba3924 81 void UART1_IRQHandler(void);
frank26080115 0:bf7b9fba3924 82 void UART_IntReceive(void);
frank26080115 0:bf7b9fba3924 83 void UART_IntErr(uint8_t bLSErrType);
frank26080115 0:bf7b9fba3924 84
frank26080115 0:bf7b9fba3924 85 uint32_t UARTReceive(LPC_UART_TypeDef *UARTPort, uint8_t *rxbuf, uint8_t buflen);
frank26080115 0:bf7b9fba3924 86 void print_menu(void);
frank26080115 0:bf7b9fba3924 87
frank26080115 0:bf7b9fba3924 88
frank26080115 0:bf7b9fba3924 89
frank26080115 0:bf7b9fba3924 90 /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/
frank26080115 0:bf7b9fba3924 91 /*********************************************************************//**
frank26080115 0:bf7b9fba3924 92 * @brief UART1 interrupt handler sub-routine
frank26080115 0:bf7b9fba3924 93 * @param[in] None
frank26080115 0:bf7b9fba3924 94 * @return None
frank26080115 0:bf7b9fba3924 95 **********************************************************************/
frank26080115 0:bf7b9fba3924 96 void UART1_IRQHandler(void)
frank26080115 0:bf7b9fba3924 97 {
frank26080115 0:bf7b9fba3924 98 uint32_t intsrc, tmp, tmp1;
frank26080115 0:bf7b9fba3924 99
frank26080115 0:bf7b9fba3924 100 /* Determine the interrupt source */
frank26080115 0:bf7b9fba3924 101 intsrc = UART_GetIntId(LPC_UART0);
frank26080115 0:bf7b9fba3924 102 tmp = intsrc & UART_IIR_INTID_MASK;
frank26080115 0:bf7b9fba3924 103
frank26080115 0:bf7b9fba3924 104 // Receive Line Status
frank26080115 0:bf7b9fba3924 105 if (tmp == UART_IIR_INTID_RLS){
frank26080115 0:bf7b9fba3924 106 // Check line status
frank26080115 0:bf7b9fba3924 107 tmp1 = UART_GetLineStatus(LPC_UART0);
frank26080115 0:bf7b9fba3924 108 // Mask out the Receive Ready and Transmit Holding empty status
frank26080115 0:bf7b9fba3924 109 tmp1 &= (UART_LSR_OE | UART_LSR_PE | UART_LSR_FE \
frank26080115 0:bf7b9fba3924 110 | UART_LSR_BI | UART_LSR_RXFE);
frank26080115 0:bf7b9fba3924 111 // If any error exist
frank26080115 0:bf7b9fba3924 112 if (tmp1) {
frank26080115 0:bf7b9fba3924 113 UART_IntErr(tmp1);
frank26080115 0:bf7b9fba3924 114 }
frank26080115 0:bf7b9fba3924 115 }
frank26080115 0:bf7b9fba3924 116
frank26080115 0:bf7b9fba3924 117 // Receive Data Available or Character time-out
frank26080115 0:bf7b9fba3924 118 if ((tmp == UART_IIR_INTID_RDA) || (tmp == UART_IIR_INTID_CTI)){
frank26080115 0:bf7b9fba3924 119 UART_IntReceive();
frank26080115 0:bf7b9fba3924 120 }
frank26080115 0:bf7b9fba3924 121
frank26080115 0:bf7b9fba3924 122 }
frank26080115 0:bf7b9fba3924 123
frank26080115 0:bf7b9fba3924 124 /********************************************************************//**
frank26080115 0:bf7b9fba3924 125 * @brief UART receive function (ring buffer used)
frank26080115 0:bf7b9fba3924 126 * @param[in] None
frank26080115 0:bf7b9fba3924 127 * @return None
frank26080115 0:bf7b9fba3924 128 *********************************************************************/
frank26080115 0:bf7b9fba3924 129 void UART_IntReceive(void)
frank26080115 0:bf7b9fba3924 130 {
frank26080115 0:bf7b9fba3924 131 uint8_t tmpc;
frank26080115 0:bf7b9fba3924 132 uint32_t rLen;
frank26080115 0:bf7b9fba3924 133
frank26080115 0:bf7b9fba3924 134 while(1){
frank26080115 0:bf7b9fba3924 135 // Call UART read function in UART driver
frank26080115 0:bf7b9fba3924 136 rLen = UART_Receive((LPC_UART_TypeDef *)LPC_UART1, &tmpc, 1, NONE_BLOCKING);
frank26080115 0:bf7b9fba3924 137 // If data received
frank26080115 0:bf7b9fba3924 138 if (rLen){
frank26080115 0:bf7b9fba3924 139 /* Check if buffer is more space
frank26080115 0:bf7b9fba3924 140 * If no more space, remaining character will be trimmed out
frank26080115 0:bf7b9fba3924 141 */
frank26080115 0:bf7b9fba3924 142 if (!__BUF_IS_FULL(rb.rx_head,rb.rx_tail)){
frank26080115 0:bf7b9fba3924 143 rb.rx[rb.rx_head] = tmpc;
frank26080115 0:bf7b9fba3924 144 __BUF_INCR(rb.rx_head);
frank26080115 0:bf7b9fba3924 145 }
frank26080115 0:bf7b9fba3924 146 }
frank26080115 0:bf7b9fba3924 147 // no more data
frank26080115 0:bf7b9fba3924 148 else {
frank26080115 0:bf7b9fba3924 149 break;
frank26080115 0:bf7b9fba3924 150 }
frank26080115 0:bf7b9fba3924 151 }
frank26080115 0:bf7b9fba3924 152 }
frank26080115 0:bf7b9fba3924 153
frank26080115 0:bf7b9fba3924 154
frank26080115 0:bf7b9fba3924 155 /*********************************************************************//**
frank26080115 0:bf7b9fba3924 156 * @brief UART Line Status Error
frank26080115 0:bf7b9fba3924 157 * @param[in] bLSErrType UART Line Status Error Type
frank26080115 0:bf7b9fba3924 158 * @return None
frank26080115 0:bf7b9fba3924 159 **********************************************************************/
frank26080115 0:bf7b9fba3924 160 void UART_IntErr(uint8_t bLSErrType)
frank26080115 0:bf7b9fba3924 161 {
frank26080115 0:bf7b9fba3924 162 if (bLSErrType & UART_LSR_PE){
frank26080115 0:bf7b9fba3924 163 UART_Send(LPC_UART0, p_err_menu, sizeof(p_err_menu), BLOCKING);
frank26080115 0:bf7b9fba3924 164 }
frank26080115 0:bf7b9fba3924 165
frank26080115 0:bf7b9fba3924 166 if (bLSErrType & UART_LSR_FE){
frank26080115 0:bf7b9fba3924 167 UART_Send(LPC_UART0, f_err_menu, sizeof(f_err_menu), BLOCKING);
frank26080115 0:bf7b9fba3924 168 }
frank26080115 0:bf7b9fba3924 169 }
frank26080115 0:bf7b9fba3924 170
frank26080115 0:bf7b9fba3924 171 /*-------------------------PRIVATE FUNCTIONS------------------------------*/
frank26080115 0:bf7b9fba3924 172 /*********************************************************************//**
frank26080115 0:bf7b9fba3924 173 * @brief UART read function for interrupt mode (using ring buffers)
frank26080115 0:bf7b9fba3924 174 * @param[in] UARTPort Selected UART peripheral used to send data,
frank26080115 0:bf7b9fba3924 175 * should be UART0
frank26080115 0:bf7b9fba3924 176 * @param[out] rxbuf Pointer to Received buffer
frank26080115 0:bf7b9fba3924 177 * @param[in] buflen Length of Received buffer
frank26080115 0:bf7b9fba3924 178 * @return Number of bytes actually read from the ring buffer
frank26080115 0:bf7b9fba3924 179 **********************************************************************/
frank26080115 0:bf7b9fba3924 180 uint32_t UARTReceive(LPC_UART_TypeDef *UARTPort, uint8_t *rxbuf, uint8_t buflen)
frank26080115 0:bf7b9fba3924 181 {
frank26080115 0:bf7b9fba3924 182 uint8_t *data = (uint8_t *) rxbuf;
frank26080115 0:bf7b9fba3924 183 uint32_t bytes = 0;
frank26080115 0:bf7b9fba3924 184
frank26080115 0:bf7b9fba3924 185 /* Temporarily lock out UART receive interrupts during this
frank26080115 0:bf7b9fba3924 186 read so the UART receive interrupt won't cause problems
frank26080115 0:bf7b9fba3924 187 with the index values */
frank26080115 0:bf7b9fba3924 188 UART_IntConfig(UARTPort, UART_INTCFG_RBR, DISABLE);
frank26080115 0:bf7b9fba3924 189
frank26080115 0:bf7b9fba3924 190 /* Loop until receive buffer ring is empty or
frank26080115 0:bf7b9fba3924 191 until max_bytes expires */
frank26080115 0:bf7b9fba3924 192 while ((buflen > 0) && (!(__BUF_IS_EMPTY(rb.rx_head, rb.rx_tail))))
frank26080115 0:bf7b9fba3924 193 {
frank26080115 0:bf7b9fba3924 194 /* Read data from ring buffer into user buffer */
frank26080115 0:bf7b9fba3924 195 *data = rb.rx[rb.rx_tail];
frank26080115 0:bf7b9fba3924 196 data++;
frank26080115 0:bf7b9fba3924 197
frank26080115 0:bf7b9fba3924 198 /* Update tail pointer */
frank26080115 0:bf7b9fba3924 199 __BUF_INCR(rb.rx_tail);
frank26080115 0:bf7b9fba3924 200
frank26080115 0:bf7b9fba3924 201 /* Increment data count and decrement buffer size count */
frank26080115 0:bf7b9fba3924 202 bytes++;
frank26080115 0:bf7b9fba3924 203 buflen--;
frank26080115 0:bf7b9fba3924 204 }
frank26080115 0:bf7b9fba3924 205
frank26080115 0:bf7b9fba3924 206 /* Re-enable UART interrupts */
frank26080115 0:bf7b9fba3924 207 UART_IntConfig(UARTPort, UART_INTCFG_RBR, ENABLE);
frank26080115 0:bf7b9fba3924 208
frank26080115 0:bf7b9fba3924 209 return bytes;
frank26080115 0:bf7b9fba3924 210 }
frank26080115 0:bf7b9fba3924 211
frank26080115 0:bf7b9fba3924 212 /*********************************************************************//**
frank26080115 0:bf7b9fba3924 213 * @brief Print Welcome menu
frank26080115 0:bf7b9fba3924 214 * @param[in] none
frank26080115 0:bf7b9fba3924 215 * @return None
frank26080115 0:bf7b9fba3924 216 **********************************************************************/
frank26080115 0:bf7b9fba3924 217 void print_menu(void)
frank26080115 0:bf7b9fba3924 218 {
frank26080115 0:bf7b9fba3924 219 UART_Send(LPC_UART0, menu1, sizeof(menu1), BLOCKING);
frank26080115 0:bf7b9fba3924 220 UART_Send(LPC_UART0, menu2, sizeof(menu2), BLOCKING);
frank26080115 0:bf7b9fba3924 221 }
frank26080115 0:bf7b9fba3924 222
frank26080115 0:bf7b9fba3924 223
frank26080115 0:bf7b9fba3924 224
frank26080115 0:bf7b9fba3924 225 /*-------------------------MAIN FUNCTION------------------------------*/
frank26080115 0:bf7b9fba3924 226 /*********************************************************************//**
frank26080115 0:bf7b9fba3924 227 * @brief c_entry: Main UART-RS485 program body
frank26080115 0:bf7b9fba3924 228 * @param[in] None
frank26080115 0:bf7b9fba3924 229 * @return int
frank26080115 0:bf7b9fba3924 230 **********************************************************************/
frank26080115 0:bf7b9fba3924 231 int c_entry(void)
frank26080115 0:bf7b9fba3924 232 {
frank26080115 0:bf7b9fba3924 233 // UART Configuration structure variable
frank26080115 0:bf7b9fba3924 234 UART_CFG_Type UARTConfigStruct;
frank26080115 0:bf7b9fba3924 235 // UART FIFO configuration Struct variable
frank26080115 0:bf7b9fba3924 236 UART_FIFO_CFG_Type UARTFIFOConfigStruct;
frank26080115 0:bf7b9fba3924 237 // Pin configuration
frank26080115 0:bf7b9fba3924 238 PINSEL_CFG_Type PinCfg;
frank26080115 0:bf7b9fba3924 239 // RS485 configuration
frank26080115 0:bf7b9fba3924 240 UART1_RS485_CTRLCFG_Type rs485cfg;
frank26080115 0:bf7b9fba3924 241 // Temp. data
frank26080115 0:bf7b9fba3924 242 uint32_t idx, len;
frank26080115 0:bf7b9fba3924 243 uint8_t buffer[10];
frank26080115 0:bf7b9fba3924 244 int32_t exit_flag, addr_toggle;
frank26080115 0:bf7b9fba3924 245
frank26080115 0:bf7b9fba3924 246 // UART0 section ----------------------------------------------------
frank26080115 0:bf7b9fba3924 247 /*
frank26080115 0:bf7b9fba3924 248 * Initialize UART0 pin connect
frank26080115 0:bf7b9fba3924 249 */
frank26080115 0:bf7b9fba3924 250 PinCfg.Funcnum = 1;
frank26080115 0:bf7b9fba3924 251 PinCfg.OpenDrain = 0;
frank26080115 0:bf7b9fba3924 252 PinCfg.Pinmode = 0;
frank26080115 0:bf7b9fba3924 253 PinCfg.Pinnum = 2;
frank26080115 0:bf7b9fba3924 254 PinCfg.Portnum = 0;
frank26080115 0:bf7b9fba3924 255 PINSEL_ConfigPin(&PinCfg);
frank26080115 0:bf7b9fba3924 256 PinCfg.Pinnum = 3;
frank26080115 0:bf7b9fba3924 257 PINSEL_ConfigPin(&PinCfg);
frank26080115 0:bf7b9fba3924 258
frank26080115 0:bf7b9fba3924 259 /* Initialize UART Configuration parameter structure to default state:
frank26080115 0:bf7b9fba3924 260 * Baudrate = 115200 bps
frank26080115 0:bf7b9fba3924 261 * 8 data bit
frank26080115 0:bf7b9fba3924 262 * 1 Stop bit
frank26080115 0:bf7b9fba3924 263 * None parity
frank26080115 0:bf7b9fba3924 264 */
frank26080115 0:bf7b9fba3924 265 UART_ConfigStructInit(&UARTConfigStruct);
frank26080115 0:bf7b9fba3924 266 UARTConfigStruct.Baud_rate = 115200;
frank26080115 0:bf7b9fba3924 267
frank26080115 0:bf7b9fba3924 268 // Initialize UART0 peripheral with given to corresponding parameter
frank26080115 0:bf7b9fba3924 269 UART_Init(LPC_UART0, &UARTConfigStruct);
frank26080115 0:bf7b9fba3924 270
frank26080115 0:bf7b9fba3924 271 /* Initialize FIFOConfigStruct to default state:
frank26080115 0:bf7b9fba3924 272 * - FIFO_DMAMode = DISABLE
frank26080115 0:bf7b9fba3924 273 * - FIFO_Level = UART_FIFO_TRGLEV0
frank26080115 0:bf7b9fba3924 274 * - FIFO_ResetRxBuf = ENABLE
frank26080115 0:bf7b9fba3924 275 * - FIFO_ResetTxBuf = ENABLE
frank26080115 0:bf7b9fba3924 276 * - FIFO_State = ENABLE
frank26080115 0:bf7b9fba3924 277 */
frank26080115 0:bf7b9fba3924 278 UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
frank26080115 0:bf7b9fba3924 279
frank26080115 0:bf7b9fba3924 280 // Initialize FIFO for UART0 peripheral
frank26080115 0:bf7b9fba3924 281 UART_FIFOConfig(LPC_UART0, &UARTFIFOConfigStruct);
frank26080115 0:bf7b9fba3924 282
frank26080115 0:bf7b9fba3924 283 // Enable UART Transmit
frank26080115 0:bf7b9fba3924 284 UART_TxCmd(LPC_UART0, ENABLE);
frank26080115 0:bf7b9fba3924 285
frank26080115 0:bf7b9fba3924 286 // print welcome screen
frank26080115 0:bf7b9fba3924 287 print_menu();
frank26080115 0:bf7b9fba3924 288
frank26080115 0:bf7b9fba3924 289
frank26080115 0:bf7b9fba3924 290 // UART1 - RS485 section -------------------------------------------------
frank26080115 0:bf7b9fba3924 291 /*
frank26080115 0:bf7b9fba3924 292 * Initialize UART1 pin connect
frank26080115 0:bf7b9fba3924 293 */
frank26080115 0:bf7b9fba3924 294 PinCfg.Funcnum = 2;
frank26080115 0:bf7b9fba3924 295 PinCfg.OpenDrain = 0;
frank26080115 0:bf7b9fba3924 296 PinCfg.Pinmode = 0;
frank26080115 0:bf7b9fba3924 297 // TXD1 - P2.0
frank26080115 0:bf7b9fba3924 298 PinCfg.Pinnum = 0;
frank26080115 0:bf7b9fba3924 299 PinCfg.Portnum = 2;
frank26080115 0:bf7b9fba3924 300 PINSEL_ConfigPin(&PinCfg);
frank26080115 0:bf7b9fba3924 301 // RXD1 - P2.1
frank26080115 0:bf7b9fba3924 302 PinCfg.Pinnum = 1;
frank26080115 0:bf7b9fba3924 303 PINSEL_ConfigPin(&PinCfg);
frank26080115 0:bf7b9fba3924 304 // DTR1 - P2.5
frank26080115 0:bf7b9fba3924 305 PinCfg.Pinnum = 5;
frank26080115 0:bf7b9fba3924 306 PINSEL_ConfigPin(&PinCfg);
frank26080115 0:bf7b9fba3924 307
frank26080115 0:bf7b9fba3924 308
frank26080115 0:bf7b9fba3924 309
frank26080115 0:bf7b9fba3924 310 /* Initialize UART Configuration parameter structure to default state:
frank26080115 0:bf7b9fba3924 311 * Baudrate = 9600 bps
frank26080115 0:bf7b9fba3924 312 * 8 data bit
frank26080115 0:bf7b9fba3924 313 * 1 Stop bit
frank26080115 0:bf7b9fba3924 314 * Parity: None
frank26080115 0:bf7b9fba3924 315 * Note: Parity will be enabled later in UART_RS485Config() function.
frank26080115 0:bf7b9fba3924 316 */
frank26080115 0:bf7b9fba3924 317 UART_ConfigStructInit(&UARTConfigStruct);
frank26080115 0:bf7b9fba3924 318
frank26080115 0:bf7b9fba3924 319 // Initialize UART0 peripheral with given to corresponding parameter
frank26080115 0:bf7b9fba3924 320 UART_Init((LPC_UART_TypeDef *)LPC_UART1, &UARTConfigStruct);
frank26080115 0:bf7b9fba3924 321
frank26080115 0:bf7b9fba3924 322 /* Initialize FIFOConfigStruct to default state:
frank26080115 0:bf7b9fba3924 323 * - FIFO_DMAMode = DISABLE
frank26080115 0:bf7b9fba3924 324 * - FIFO_Level = UART_FIFO_TRGLEV0
frank26080115 0:bf7b9fba3924 325 * - FIFO_ResetRxBuf = ENABLE
frank26080115 0:bf7b9fba3924 326 * - FIFO_ResetTxBuf = ENABLE
frank26080115 0:bf7b9fba3924 327 * - FIFO_State = ENABLE
frank26080115 0:bf7b9fba3924 328 */
frank26080115 0:bf7b9fba3924 329 UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
frank26080115 0:bf7b9fba3924 330
frank26080115 0:bf7b9fba3924 331 // Initialize FIFO for UART0 peripheral
frank26080115 0:bf7b9fba3924 332 UART_FIFOConfig((LPC_UART_TypeDef *)LPC_UART1, &UARTFIFOConfigStruct);
frank26080115 0:bf7b9fba3924 333
frank26080115 0:bf7b9fba3924 334 // Configure RS485
frank26080115 0:bf7b9fba3924 335 /*
frank26080115 0:bf7b9fba3924 336 * - Auto Direction in Tx/Rx driving is enabled
frank26080115 0:bf7b9fba3924 337 * - Direction control pin is set to DTR1
frank26080115 0:bf7b9fba3924 338 * - Direction control pole is set to "1" that means direction pin
frank26080115 0:bf7b9fba3924 339 * will drive to high state before transmit data.
frank26080115 0:bf7b9fba3924 340 * - Multidrop mode is disable
frank26080115 0:bf7b9fba3924 341 * - Auto detect address is disabled
frank26080115 0:bf7b9fba3924 342 * - Receive state is enable
frank26080115 0:bf7b9fba3924 343 */
frank26080115 0:bf7b9fba3924 344 rs485cfg.AutoDirCtrl_State = ENABLE;
frank26080115 0:bf7b9fba3924 345 rs485cfg.DirCtrlPin = UART1_RS485_DIRCTRL_DTR;
frank26080115 0:bf7b9fba3924 346 rs485cfg.DirCtrlPol_Level = SET;
frank26080115 0:bf7b9fba3924 347 rs485cfg.DelayValue = 50;
frank26080115 0:bf7b9fba3924 348 rs485cfg.NormalMultiDropMode_State = DISABLE;
frank26080115 0:bf7b9fba3924 349 rs485cfg.AutoAddrDetect_State = DISABLE;
frank26080115 0:bf7b9fba3924 350 rs485cfg.MatchAddrValue = 0;
frank26080115 0:bf7b9fba3924 351 rs485cfg.Rx_State = ENABLE;
frank26080115 0:bf7b9fba3924 352 UART_RS485Config(LPC_UART1, &rs485cfg);
frank26080115 0:bf7b9fba3924 353
frank26080115 0:bf7b9fba3924 354 /* Enable UART Rx interrupt */
frank26080115 0:bf7b9fba3924 355 UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RBR, ENABLE);
frank26080115 0:bf7b9fba3924 356 /* Enable UART line status interrupt */
frank26080115 0:bf7b9fba3924 357 UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RLS, ENABLE);
frank26080115 0:bf7b9fba3924 358
frank26080115 0:bf7b9fba3924 359 /* preemption = 1, sub-priority = 1 */
frank26080115 0:bf7b9fba3924 360 NVIC_SetPriority(UART1_IRQn, ((0x01<<3)|0x01));
frank26080115 0:bf7b9fba3924 361 /* Enable Interrupt for UART0 channel */
frank26080115 0:bf7b9fba3924 362 NVIC_EnableIRQ(UART1_IRQn);
frank26080115 0:bf7b9fba3924 363
frank26080115 0:bf7b9fba3924 364 // Enable UART Transmit
frank26080115 0:bf7b9fba3924 365 UART_TxCmd((LPC_UART_TypeDef *)LPC_UART1, ENABLE);
frank26080115 0:bf7b9fba3924 366
frank26080115 0:bf7b9fba3924 367 addr_toggle = 1;
frank26080115 0:bf7b9fba3924 368 // for testing...
frank26080115 0:bf7b9fba3924 369 while (1){
frank26080115 0:bf7b9fba3924 370
frank26080115 0:bf7b9fba3924 371 // Send slave addr -----------------------------------------
frank26080115 0:bf7b9fba3924 372 UART_Send(LPC_UART0, send_menu, sizeof(send_menu), BLOCKING);
frank26080115 0:bf7b9fba3924 373 // Send slave addr on RS485 bus
frank26080115 0:bf7b9fba3924 374 if (addr_toggle){
frank26080115 0:bf7b9fba3924 375 UART_RS485SendSlvAddr(LPC_UART1, SLAVE_ADDR_A);
frank26080115 0:bf7b9fba3924 376 } else {
frank26080115 0:bf7b9fba3924 377 UART_RS485SendSlvAddr(LPC_UART1, SLAVE_ADDR_B);
frank26080115 0:bf7b9fba3924 378 }
frank26080115 0:bf7b9fba3924 379 // delay for a while
frank26080115 0:bf7b9fba3924 380 for (len = 0; len < 1000; len++);
frank26080115 0:bf7b9fba3924 381
frank26080115 0:bf7b9fba3924 382 // Send data -----------------------------------------------
frank26080115 0:bf7b9fba3924 383 if (addr_toggle){
frank26080115 0:bf7b9fba3924 384 UART_RS485SendData(LPC_UART1, slaveA_msg, sizeof(slaveA_msg));
frank26080115 0:bf7b9fba3924 385 } else {
frank26080115 0:bf7b9fba3924 386 UART_RS485SendData(LPC_UART1, slaveB_msg, sizeof(slaveB_msg));
frank26080115 0:bf7b9fba3924 387 }
frank26080115 0:bf7b9fba3924 388 // Send terminator
frank26080115 0:bf7b9fba3924 389 UART_RS485SendData(LPC_UART1, &terminator, 1);
frank26080115 0:bf7b9fba3924 390 // delay for a while
frank26080115 0:bf7b9fba3924 391 for (len = 0; len < 1000; len++);
frank26080115 0:bf7b9fba3924 392
frank26080115 0:bf7b9fba3924 393 // Receive data from slave --------------------------------
frank26080115 0:bf7b9fba3924 394 UART_Send(LPC_UART0, recv_menu, sizeof(recv_menu), BLOCKING);
frank26080115 0:bf7b9fba3924 395 // If address 'A' required response...
frank26080115 0:bf7b9fba3924 396 if (addr_toggle){
frank26080115 0:bf7b9fba3924 397 exit_flag = 0;
frank26080115 0:bf7b9fba3924 398 while (!exit_flag){
frank26080115 0:bf7b9fba3924 399 len = UARTReceive((LPC_UART_TypeDef *)LPC_UART1, buffer, sizeof(buffer));
frank26080115 0:bf7b9fba3924 400 /* Got some data */
frank26080115 0:bf7b9fba3924 401 idx = 0;
frank26080115 0:bf7b9fba3924 402 while (idx < len)
frank26080115 0:bf7b9fba3924 403 {
frank26080115 0:bf7b9fba3924 404 if (buffer[idx] == 13){
frank26080115 0:bf7b9fba3924 405 exit_flag = 1;
frank26080115 0:bf7b9fba3924 406 } else {
frank26080115 0:bf7b9fba3924 407 /* Echo it back */
frank26080115 0:bf7b9fba3924 408 UART_Send(LPC_UART0, &buffer[idx], 1, BLOCKING);
frank26080115 0:bf7b9fba3924 409 }
frank26080115 0:bf7b9fba3924 410 idx++;
frank26080115 0:bf7b9fba3924 411 }
frank26080115 0:bf7b9fba3924 412 }
frank26080115 0:bf7b9fba3924 413 }
frank26080115 0:bf7b9fba3924 414
frank26080115 0:bf7b9fba3924 415 UART_Send(LPC_UART0, nextline, sizeof(nextline), BLOCKING);
frank26080115 0:bf7b9fba3924 416 addr_toggle = (addr_toggle ? 0 : 1);
frank26080115 0:bf7b9fba3924 417 // long delay here
frank26080115 0:bf7b9fba3924 418 for (len = 0; len < 10000000; len++);
frank26080115 0:bf7b9fba3924 419 }
frank26080115 0:bf7b9fba3924 420
frank26080115 0:bf7b9fba3924 421 return 1;
frank26080115 0:bf7b9fba3924 422 }
frank26080115 0:bf7b9fba3924 423
frank26080115 0:bf7b9fba3924 424 /* With ARM and GHS toolsets, the entry point is main() - this will
frank26080115 0:bf7b9fba3924 425 allow the linker to generate wrapper code to setup stacks, allocate
frank26080115 0:bf7b9fba3924 426 heap area, and initialize and copy code and data segments. For GNU
frank26080115 0:bf7b9fba3924 427 toolsets, the entry point is through __start() in the crt0_gnu.asm
frank26080115 0:bf7b9fba3924 428 file, and that startup code will setup stacks and data */
frank26080115 0:bf7b9fba3924 429 int main(void)
frank26080115 0:bf7b9fba3924 430 {
frank26080115 0:bf7b9fba3924 431 return c_entry();
frank26080115 0:bf7b9fba3924 432 }
frank26080115 0:bf7b9fba3924 433
frank26080115 0:bf7b9fba3924 434
frank26080115 0:bf7b9fba3924 435 #ifdef DEBUG
frank26080115 0:bf7b9fba3924 436 /*******************************************************************************
frank26080115 0:bf7b9fba3924 437 * @brief Reports the name of the source file and the source line number
frank26080115 0:bf7b9fba3924 438 * where the CHECK_PARAM error has occurred.
frank26080115 0:bf7b9fba3924 439 * @param[in] file Pointer to the source file name
frank26080115 0:bf7b9fba3924 440 * @param[in] line assert_param error line source number
frank26080115 0:bf7b9fba3924 441 * @return None
frank26080115 0:bf7b9fba3924 442 *******************************************************************************/
frank26080115 0:bf7b9fba3924 443 void check_failed(uint8_t *file, uint32_t line)
frank26080115 0:bf7b9fba3924 444 {
frank26080115 0:bf7b9fba3924 445 /* User can add his own implementation to report the file name and line number,
frank26080115 0:bf7b9fba3924 446 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
frank26080115 0:bf7b9fba3924 447
frank26080115 0:bf7b9fba3924 448 /* Infinite loop */
frank26080115 0:bf7b9fba3924 449 while(1);
frank26080115 0:bf7b9fba3924 450 }
frank26080115 0:bf7b9fba3924 451 #endif
frank26080115 0:bf7b9fba3924 452
frank26080115 0:bf7b9fba3924 453 /*
frank26080115 0:bf7b9fba3924 454 * @}
frank26080115 0:bf7b9fba3924 455 */