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00103 #include "board.h"
00104
00105 #include <stdbool.h>
00106 #include <stdio.h>
00107 #include <string.h>
00108
00109
00110
00111
00112
00113
00114 #define BUFFER_SIZE 256
00115
00116
00117 #define BAUDRATE 256000
00118
00119
00120 #define USART USART1
00121 #define ID_USART ID_USART1
00122
00123
00124
00125
00126
00127 static sXdmad dmad;
00128
00129 static uint32_t usartDmaRxChannel;
00130 static uint32_t usartDmaTxChannel;
00131
00132
00133 #define PIN_USART1_CTS_IOR {PIO_PA25A_CTS1, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
00134
00135
00136 const Pin pins[] = {PIN_USART1_RXD, PIN_USART1_TXD, PIN_USART1_CTS_IOR, PIN_USART1_RTS };
00137
00138
00139 char palette[BUFFER_SIZE - 2]=
00140 "#*************************************************************************\n\r\
00141 * This application gives an example of how to use USART in LON mode.\n\r\
00142 * The LON mode provides connectivity to the local operating network (LON).\n\r\
00143 * .\n\r\
00144 ";
00145
00146
00147 COMPILER_ALIGNED(32) static char Buffer[BUFFER_SIZE];
00148
00149
00150 COMPILER_ALIGNED(32) static char pRecvBufferUSART[BUFFER_SIZE];
00151
00152
00153 static volatile uint8_t recvDone = 0;
00154
00155
00156 static volatile uint8_t transDone = 0;
00157
00158
00159
00160
00161
00162
00163
00164
00165 static void _ConfigureUsart( void )
00166 {
00167
00168
00169 uint32_t mode;
00170 Usart *pUsart = USART;
00171
00172
00173
00174
00175 USART_SetTransmitterEnabled(pUsart, 1);
00176 USART_SetReceiverEnabled(pUsart, 1);
00177
00178
00179
00180 PMC_EnablePeripheral(ID_USART);
00181
00182 mode = US_MR_USART_MODE_LON | US_MR_USCLKS_MCK
00183 | US_MR_CHRL_8_BIT | US_MR_PAR_NO | US_MR_NBSTOP_1_BIT
00184 | US_MR_CHMODE_NORMAL
00185
00186 | US_MR_MAN;
00187
00188 pUsart->US_CR = US_CR_RSTRX | US_CR_RSTTX
00189 | US_CR_RXDIS | US_CR_TXDIS | US_CR_RSTSTA;
00190 pUsart->US_IDR = 0xFFFFFFFF;
00191
00192 pUsart->US_MR = mode;
00193
00194
00195 USART_SetBaudrate(pUsart, 0, BAUDRATE, BOARD_MCK);
00196
00197
00198
00199 pUsart->US_LONMR = US_LONMR_COMMT
00200 | US_LONMR_COLDET
00201 | US_LONMR_DMAM
00202 | US_LONMR_LCDS
00203 | US_LONMR_EOFS(1);
00204
00205
00206
00207
00208 pUsart->US_FIDI = 5;
00209 pUsart->US_LONB1TX = 5;
00210 pUsart->US_LONB1RX = 5;
00211 pUsart->US_TTGR = US_TTGR_PCYCLE(5);
00212 pUsart->US_LONPRIO = US_LONPRIO_PSNB(5)
00213 | US_LONPRIO_NPS(5);
00214
00215
00216
00217 if (0 == (pUsart->US_LONMR & US_LONMR_COMMT)) {
00218 pUsart->US_IDTTX = US_IDTTX_IDTTX(3);
00219 pUsart->US_IDTRX = US_IDTRX_IDTRX(3);
00220 }
00221
00222
00223
00224
00225
00226 pUsart->US_MAN = US_MAN_TX_PL(5) | US_MAN_TX_PP_ALL_ONE
00227 | US_MAN_RX_PL(5) | US_MAN_RX_PP_ALL_ONE
00228 | US_MAN_ONE | US_MAN_DRIFT;
00229
00230 pUsart->US_LONPR = US_LONPR_LONPL(5);
00231
00232
00233
00234 pUsart->US_CR = US_CR_RSTRX | US_CR_RSTTX;
00235 pUsart->US_CR = US_CR_RXEN | US_CR_TXEN;
00236 }
00237
00238
00239
00240
00241 void XDMAC_Handler(void)
00242 {
00243 XDMAD_Handler(&dmad);
00244 }
00245
00246
00247
00248
00249 static void _DmaRxCallback(uint32_t status, void* pArg)
00250 {
00251 status = status;
00252 pArg = pArg;
00253 SCB_InvalidateDCache_by_Addr((uint32_t*)pRecvBufferUSART, BUFFER_SIZE - 1);
00254 recvDone = 1;
00255 }
00256
00257
00258
00259
00260 static void _DmaTxCallback(uint32_t status, void* pArg)
00261 {
00262 status = status;
00263 pArg = pArg;
00264 transDone = 1;
00265 }
00266
00267
00268
00269
00270 static void _DmaUsartTx(void)
00271 {
00272 sXdmadCfg xdmadCfg;
00273
00274 xdmadCfg.mbr_ubc = BUFFER_SIZE;
00275 xdmadCfg.mbr_sa = (uint32_t)Buffer;
00276 xdmadCfg.mbr_da = (uint32_t)&USART->US_THR;
00277 xdmadCfg.mbr_cfg =
00278 XDMAC_CC_TYPE_PER_TRAN |
00279 XDMAC_CC_MBSIZE_SINGLE |
00280 XDMAC_CC_DSYNC_MEM2PER |
00281 XDMAC_CC_CSIZE_CHK_1 |
00282 XDMAC_CC_DWIDTH_BYTE |
00283 XDMAC_CC_SIF_AHB_IF1 |
00284 XDMAC_CC_DIF_AHB_IF1 |
00285 XDMAC_CC_SAM_INCREMENTED_AM |
00286 XDMAC_CC_DAM_FIXED_AM |
00287 XDMAC_CC_PERID(
00288 XDMAIF_Get_ChannelNumber(ID_USART, XDMAD_TRANSFER_TX)
00289 );
00290
00291 xdmadCfg.mbr_bc = 0;
00292 xdmadCfg.mbr_ds = 0;
00293 xdmadCfg.mbr_sus = 0;
00294 xdmadCfg.mbr_dus = 0;
00295 XDMAD_ConfigureTransfer(
00296 &dmad, usartDmaTxChannel, &xdmadCfg, 0, 0,
00297 XDMAC_CIE_BIE |
00298 XDMAC_CIE_DIE |
00299 XDMAC_CIE_FIE |
00300 XDMAC_CIE_RBIE |
00301 XDMAC_CIE_WBIE |
00302 XDMAC_CIE_ROIE);
00303
00304 SCB_CleanDCache_by_Addr((uint32_t*)Buffer, BUFFER_SIZE);
00305 XDMAD_StartTransfer(&dmad, usartDmaTxChannel);
00306 }
00307
00308
00309
00310
00311 static void _DmaUsartRx(void)
00312 {
00313 uint32_t status;
00314
00315
00316 status = USART->US_CSR;
00317 if ((status & US_CSR_RXRDY) == US_CSR_RXRDY)
00318 status = USART->US_RHR;
00319 sXdmadCfg xdmadCfg;
00320 xdmadCfg.mbr_ubc = BUFFER_SIZE - 1;
00321 xdmadCfg.mbr_sa = (uint32_t)&USART->US_RHR;
00322 xdmadCfg.mbr_da = (uint32_t)pRecvBufferUSART;
00323 xdmadCfg.mbr_cfg =
00324 XDMAC_CC_TYPE_PER_TRAN |
00325 XDMAC_CC_MBSIZE_SINGLE |
00326 XDMAC_CC_DSYNC_PER2MEM |
00327 XDMAC_CC_CSIZE_CHK_1 |
00328 XDMAC_CC_DWIDTH_BYTE |
00329 XDMAC_CC_SIF_AHB_IF1 |
00330 XDMAC_CC_DIF_AHB_IF1 |
00331 XDMAC_CC_SAM_FIXED_AM |
00332 XDMAC_CC_DAM_INCREMENTED_AM |
00333 XDMAC_CC_PERID(
00334 XDMAIF_Get_ChannelNumber(ID_USART, XDMAD_TRANSFER_RX)
00335 );
00336
00337 xdmadCfg.mbr_bc = 0;
00338 xdmadCfg.mbr_ds = 0;
00339 xdmadCfg.mbr_sus = 0;
00340 xdmadCfg.mbr_dus = 0;
00341 XDMAD_ConfigureTransfer(
00342 &dmad, usartDmaRxChannel, &xdmadCfg, 0, 0,
00343 XDMAC_CIE_BIE |
00344 XDMAC_CIE_DIE |
00345 XDMAC_CIE_FIE |
00346 XDMAC_CIE_RBIE |
00347 XDMAC_CIE_WBIE |
00348 XDMAC_CIE_ROIE);
00349 XDMAD_StartTransfer(&dmad, usartDmaRxChannel);
00350 }
00351
00352
00353
00354
00355
00356 static void _ConfigureDma(void)
00357 {
00358
00359 XDMAD_Initialize(&dmad, 0);
00360
00361
00362 usartDmaTxChannel = XDMAD_AllocateChannel(&dmad, XDMAD_TRANSFER_MEMORY, ID_USART);
00363 usartDmaRxChannel = XDMAD_AllocateChannel(&dmad, ID_USART, XDMAD_TRANSFER_MEMORY);
00364 if (usartDmaTxChannel == XDMAD_ALLOC_FAILED ||
00365 usartDmaRxChannel == XDMAD_ALLOC_FAILED) {
00366 printf("XDMA channel allocat failed!\n\r");
00367 while (1);
00368 }
00369
00370
00371 XDMAD_SetCallback(&dmad, usartDmaRxChannel,(XdmadTransferCallback)_DmaRxCallback, 0);
00372
00373 XDMAD_SetCallback(&dmad, usartDmaTxChannel,(XdmadTransferCallback)_DmaTxCallback, 0);
00374 XDMAD_PrepareChannel(&dmad, usartDmaRxChannel);
00375 XDMAD_PrepareChannel(&dmad, usartDmaTxChannel);
00376
00377 }
00378
00379
00380
00381
00382 static void _DisplayMenu(void)
00383 {
00384 printf("Menu :\n\r");
00385 printf("------\n\r");
00386 printf(" - t: Transmit pattern to LON\n\r");
00387 printf(" - r: Receive data from LON \n\r");
00388 printf(" - m: Display menu \n\r");
00389 }
00390
00391
00392
00393
00394
00395 static void _DumpInfo(char *buf, uint32_t size)
00396 {
00397 uint32_t i = 0;
00398
00399 while ((i < size) && (buf[i] != 0))
00400 printf("%c", buf[i++]);
00401 }
00402
00403
00404
00405
00406
00407
00408
00409
00410
00411 extern int main(void)
00412 {
00413 uint8_t ucKey;
00414
00415
00416 WDT_Disable(WDT);
00417
00418 SCB_EnableICache();
00419 SCB_EnableDCache();
00420
00421
00422 printf("-- USART LON Example %s --\n\r", SOFTPACK_VERSION);
00423 printf("-- %s\n\r", BOARD_NAME);
00424 printf("-- Compiled: %s %s With %s--\n\r", __DATE__, __TIME__, COMPILER_NAME);
00425
00426
00427 PIO_Configure(pins, PIO_LISTSIZE(pins));
00428
00429 MATRIX->MATRIX_WPMR = MATRIX_WPMR_WPKEY_PASSWD;
00430 MATRIX->CCFG_SYSIO |= CCFG_SYSIO_SYSIO4;
00431
00432
00433 _DisplayMenu();
00434
00435
00436 _ConfigureDma();
00437
00438 Buffer[0] = sizeof(palette) - 1;
00439 Buffer[1] = US_LONL2HDR_BLI(2);
00440 memcpy(&Buffer[2], palette, sizeof(palette));
00441
00442
00443 _ConfigureUsart();
00444
00445 NVIC_EnableIRQ(XDMAC_IRQn);
00446
00447 while (1) {
00448 ucKey = DBG_GetChar();
00449 switch (ucKey) {
00450 case 't':
00451 case 'T':
00452 printf("-I- LON Transmitting ... \n\r");
00453 USART->US_CR = US_CR_RSTSTA;
00454 _DmaUsartTx();
00455 while (!transDone);
00456 printf("-I- LON Transmitting completed \n\r");
00457 transDone = 0;
00458 break;
00459
00460 case 'r':
00461 case 'R':
00462 printf("-I- LON receiving ... \n\r");
00463 USART->US_CR = US_CR_RSTSTA;
00464 recvDone = 0;
00465
00466 _DmaUsartRx();
00467 while (!recvDone);
00468
00469 _DumpInfo(pRecvBufferUSART, BUFFER_SIZE - 1);
00470 printf("\n\r-I- LON Receiving completed \n\r");
00471 memset(pRecvBufferUSART, 0, sizeof(pRecvBufferUSART));
00472 break;
00473
00474 case 'm':
00475 case 'M':
00476 _DisplayMenu();
00477 break;
00478 }
00479 }
00480 }
00481
00482