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00092 #include "board.h"
00093
00094 #include <stdbool.h>
00095 #include <stdio.h>
00096 #include <string.h>
00097
00098
00099
00100
00101
00102
00103 #define PINS_USART PIN_USART0_TXD, PIN_USART0_RXD
00104
00105
00106
00107 #define BASE_USART USART0
00108 #define ID_USART ID_USART0
00109 #define USART_IRQ USART0_IRQn
00110 #define USART_TIMEOUT 115200
00111
00112
00113
00114
00115
00116
00117 static UsartDma Usartd;
00118 static UsartChannel UsartTx, UsartRx;
00119 static sXdmad ChDma;
00120 static volatile uint32_t Timeout = 0;
00121
00122 COMPILER_ALIGNED(32) uint8_t pTxBuffer[] = {"This is first USART TX Buffer\n\r"};
00123 COMPILER_ALIGNED(32) uint8_t pRxBuffer[30], BuffRx, BuffTx;
00124
00125
00126 const Pin pins[] = {PINS_USART};
00127
00128 #define PIN0 {PIO_PA6, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
00129 #define PIN1 {PIO_PD11, PIOD, ID_PIOD, PIO_OUTPUT_0, PIO_DEFAULT}
00130
00131 #define PINS PIN0, PIN1
00132 const Pin pins_test[] = {PINS};
00133
00134
00135 void XDMAC_Handler(void)
00136 {
00137 XDMAD_Handler(&ChDma);
00138 }
00139
00140 void USART0_Handler(void)
00141 {
00142 uint32_t status = BASE_USART->US_CSR;
00143
00144 if (status & US_CSR_TIMEOUT) {
00145 USART_AcknowledgeRxTimeOut(BASE_USART, 0);
00146 USART_AcknowledgeRxTimeOut(BASE_USART, 1);
00147 printf("\r %u sec without char on USART Rx", (unsigned int)Timeout++);
00148 }
00149 }
00150
00151
00152
00153
00154 static void DisplayMenu(void)
00155 {
00156 printf("\n\rMenu :\n\r");
00157 printf("========================\n\r");
00158 printf(" L: Perform USART DMA LoopBack Normal transfer\n\r");
00159 printf(" T: Perform USART DMA Normal transfer(remote loopback) \n\r");
00160
00161 printf(" W: Perform USART Timeout \n\r");
00162
00163 printf(" H: Display menu \n\r\n\r");
00164 printf("========================\n\r");
00165 }
00166
00167 static void _UsartdConfig(void)
00168 {
00169 uint32_t mode = 0
00170 | US_MR_USART_MODE_NORMAL
00171 | US_MR_CHRL_8_BIT
00172 | US_MR_PAR_NO
00173 | US_MR_NBSTOP_1_BIT
00174 | US_MR_CHMODE_NORMAL;
00175
00176 memset(&UsartTx, 0, sizeof(UsartChannel));
00177 memset(&UsartRx, 0, sizeof(UsartChannel));
00178
00179 UsartTx.BuffSize = 1;
00180 UsartTx.pBuff = &BuffTx;
00181 UsartRx.BuffSize = 1;
00182 UsartRx.pBuff = &BuffRx;
00183 UsartTx.dmaProgress = 1;
00184 UsartRx.dmaProgress = 1;
00185
00186 UsartTx.dmaProgrammingMode = XDMAD_SINGLE;
00187 UsartRx.dmaProgrammingMode = XDMAD_SINGLE;
00188
00189 Usartd.pXdmad = &ChDma;
00190 Usartd.pRxChannel = &UsartRx;
00191 Usartd.pTxChannel = &UsartTx;
00192 USARTD_Configure(&Usartd, ID_USART, mode, 115200, BOARD_MCK);
00193 }
00194
00195 static void _UsartdConfigLB(void)
00196 {
00197 uint32_t mode = 0
00198 | US_MR_USART_MODE_NORMAL
00199 | US_MR_CHRL_8_BIT
00200 | US_MR_PAR_NO
00201 | US_MR_NBSTOP_1_BIT
00202 | US_MR_CHMODE_LOCAL_LOOPBACK;
00203 memset(&UsartTx, 0, sizeof(UsartChannel));
00204 memset(&UsartRx, 0, sizeof(UsartChannel));
00205
00206 UsartTx.BuffSize = 30;
00207 UsartTx.pBuff = pTxBuffer;
00208 UsartRx.BuffSize= 30;
00209 UsartRx.pBuff = pRxBuffer;
00210 UsartTx.dmaProgress = 1;
00211 UsartRx.dmaProgress = 1;
00212
00213 UsartTx.dmaProgrammingMode = XDMAD_SINGLE;
00214 UsartRx.dmaProgrammingMode = XDMAD_SINGLE;
00215
00216 UsartTx.callback = 0;
00217 UsartRx.callback = 0;
00218
00219 Usartd.pXdmad = &ChDma;
00220 Usartd.pRxChannel = &UsartRx;
00221 Usartd.pTxChannel = &UsartTx;
00222 USARTD_Configure(&Usartd, ID_USART, mode, 115200, BOARD_MCK);
00223 }
00224
00225
00226
00227
00228
00229
00230
00231
00232
00233 extern int main( void )
00234 {
00235
00236 uint8_t ucKey;
00237
00238
00239 WDT_Disable(WDT);
00240
00241 SCB_EnableICache();
00242 SCB_EnableDCache();
00243
00244
00245 printf("-- USART Example %s --\n\r", SOFTPACK_VERSION);
00246 printf("-- %s\n\r", BOARD_NAME);
00247 printf("-- Compiled: %s %s With %s--\n\r", __DATE__, __TIME__, COMPILER_NAME);
00248
00249
00250
00251 PIO_Configure(pins, PIO_LISTSIZE(pins));
00252
00253
00254 PIO_Configure(pins_test, PIO_LISTSIZE(pins_test));
00255
00256
00257 DisplayMenu();
00258
00259 while (1) {
00260 ucKey = DBG_GetChar();
00261
00262 switch (ucKey) {
00263 case 'H' :
00264 case 'h' :
00265 DisplayMenu();
00266 break;
00267
00268 case 'l' :
00269 case 'L' :
00270 memset(pRxBuffer,'X' ,30);
00271 pRxBuffer[28] = '\n';
00272 pRxBuffer[29] = '\r';
00273 printf("\n\rRx Buffer transfer is \n\r");
00274
00275 puts((const char *)pTxBuffer);
00276
00277 printf("\n\rRx Buffer before transfer is \n\r");
00278 puts((const char *)pRxBuffer);
00279 _UsartdConfigLB();
00280 USARTD_EnableRxChannels(&Usartd, &UsartRx);
00281 USARTD_EnableTxChannels(&Usartd, &UsartTx);
00282 USARTD_RcvData(&Usartd);
00283 USARTD_SendData(&Usartd);
00284 while (UsartRx.dmaProgress != 1);
00285 printf("Rx Buffer after transfer is \n\r");
00286 puts((const char *)pRxBuffer);
00287 USARTD_DisableRxChannels(&Usartd, &UsartRx);
00288 USARTD_DisableTxChannels(&Usartd, &UsartTx);
00289 break;
00290
00291 case 't' :
00292 case 'T' :
00293 printf("Press Q on USART terminal to quit\n\r");
00294 _UsartdConfig();
00295 while ('Q' != BuffTx) {
00296 USARTD_EnableRxChannels(&Usartd, &UsartRx);
00297 USARTD_EnableTxChannels(&Usartd, &UsartTx);
00298 USARTD_RcvData(&Usartd);
00299 while (UsartRx.dmaProgress != 1);
00300 BuffTx = BuffRx;
00301 USARTD_SendData(&Usartd);
00302 while (UsartTx.dmaProgress != 1);
00303 }
00304 printf("Exit \n\r");
00305 DisplayMenu();
00306 break;
00307
00308 case 'w' :
00309 case 'W' :
00310 printf("\n\r It will Quit if no character received within 10 secs \
00311 (Need to send at least one byte to initiate timeout)\n\r");
00312 _UsartdConfig();
00313 NVIC_ClearPendingIRQ(USART_IRQ);
00314 NVIC_SetPriority(USART_IRQ , 1);
00315 USART_EnableIt(BASE_USART, US_IER_TIMEOUT);
00316
00317 NVIC_EnableIRQ(USART_IRQ);
00318 USART_EnableRecvTimeOut( BASE_USART, USART_TIMEOUT);
00319 USARTD_EnableRxChannels(&Usartd, &UsartRx);
00320 USARTD_EnableTxChannels(&Usartd, &UsartTx);
00321 USARTD_RcvData(&Usartd);
00322 while (Timeout < 10) {
00323 if (UsartRx.dmaProgress) {
00324 BuffTx = BuffRx;
00325 Timeout = 0;
00326 USARTD_SendData(&Usartd);
00327 while (UsartTx.dmaProgress != 1);
00328 USARTD_EnableRxChannels(&Usartd, &UsartRx);
00329 USARTD_EnableTxChannels(&Usartd, &UsartTx);
00330 USARTD_RcvData(&Usartd);
00331 }
00332 }
00333 USART_DisableIt(BASE_USART, US_IER_TIMEOUT);
00334 NVIC_DisableIRQ(USART_IRQ);
00335 printf("Exit \n\r");
00336 DisplayMenu();
00337 break;
00338
00339 default :
00340 break;
00341 }
00342 }
00343 }
00344