//------------------------------------------------------------------------------ /// Callback invoked when data has been received on the USB. //------------------------------------------------------------------------------ static void UsbDataReceived(unsigned int unused, unsigned char status, unsigned int received, unsigned int remaining) { // Check that data has been received successfully if (status == USBD_STATUS_SUCCESS) { // Send data through USART while (!USART_WriteBuffer(AT91C_BASE_US0, usbBuffer, received)); AT91C_BASE_US0->US_IER = AT91C_US_TXBUFE; // Check if bytes have been discarded if ((received == DATABUFFERSIZE) && (remaining > 0)) { TRACE_WARNING( "UsbDataReceived: %u bytes discarded\n\r", remaining); } } else { TRACE_WARNING( "UsbDataReceived: Transfer error\n\r"); } }
/** * \brief Interrupt handler for TC0. * * Displays the number of bytes received during the * last second and the total number of bytes received, then restarts a read * transfer on the USART if it was stopped. */ void TC0_IrqHandler( void ) { uint32_t dwStatus ; static uint32_t bytesTotal = 0 ; /* Read TC0 status*/ dwStatus = TC0->TC_CHANNEL[0].TC_SR; /* RC compare*/ if ( (dwStatus & TC_SR_CPCS) == TC_SR_CPCS ) { /* Display info*/ bytesTotal += bytesReceived ; sprintf( pString, "Bps: %4u; Tot: %6u\n\r", (unsigned int)bytesReceived, (unsigned int)bytesTotal ) ; USART_WriteBuffer( BOARD_USART_BASE, pString, sizeof( pString ) ) ; bytesReceived = 0 ; /* Resume transfer if needed*/ if ( BOARD_USART_BASE->US_RCR == 0 ) { USART_ReadBuffer( BOARD_USART_BASE, pBuffer, BUFFER_SIZE ) ; BOARD_USART_BASE->US_IER = US_IER_RXBUFF ; } } }
/*---------------------------------------------------------------------------- * Callback invoked when data has been received on the USB. *----------------------------------------------------------------------------*/ static void UsbDataReceived(uint32_t unused, uint8_t status, uint32_t received, uint32_t remaining) { /* Check that data has been received successfully */ if (status == USBD_STATUS_SUCCESS) { /* Send data through USART */ while (!USART_WriteBuffer(BASE_USART, usbSerialBuffer0, received)); BASE_USART->US_IER = US_IER_TXBUFE; /* Check if bytes have been discarded */ if ((received == DATABUFFERSIZE) && (remaining > 0)) { TRACE_WARNING( "UsbDataReceived: %u bytes discarded\n\r", (unsigned int)remaining); } } else { TRACE_WARNING( "UsbDataReceived: Transfer error\n\r"); } }
/** * \brief Application entry point. * * Configures USART1 in spi master/slave mode and SPI in slave/master mode,start * a transmission between two peripherals. * \return Unused. */ extern int main( void ) { char c ; char data = 0x0 ; /* Disable watchdog */ WDT_Disable( WDT ) ; /* Configure pins */ PIO_Configure( pins, PIO_LISTSIZE( pins ) ) ; /* Example information log */ printf( "-- USART SPI Mode Example %s --\n\r", SOFTPACK_VERSION ) ; printf( "-- %s\n\r", BOARD_NAME ) ; printf( "-- Compiled: %s %s --\n\r", __DATE__, __TIME__ ) ; /* display main menu*/ _DisplayMainmenu() ; /* configure USART1 in Master and SPI in slave mode*/ _ConfigureUsart( STATE_UM_SS ) ; _ConfigureSpi( STATE_UM_SS ) ; printf( "-- USART1 as MASTER,SPI as SLAVE.--\n\r" ) ; while ( 1 ) { c = UART_GetChar() ; switch ( c ) { case 'w': case 'W': if ( glob_state == STATE_UM_SS ) { data = SPI->SPI_RDR; printf( "0x%x\n\r", data ) ; /* slave in */ SPI_ReadBuffer( SPI, pRecvBufferSPI, BUFFER_SIZE ) ; SPI_EnableIt( SPI, SPI_IER_RXBUFF ) ; /* master out*/ USART_WriteBuffer( BOARD_USART_BASE, Buffer, BUFFER_SIZE ) ; while ( !recvDone ) ; if ( recvDone ) { printf( "----USART1 MASTER WRITE----\n\r" ) ; if ( strncmp( pRecvBufferSPI, Buffer, BUFFER_SIZE ) ) { printf( " -F-: Failed!\n\r" ) ; } else { /* successfully received*/ _DumpInfo( pRecvBufferSPI, BUFFER_SIZE ) ; } printf( "----END of USART1 MASTER WRITE----\n\r" ) ; memset( pRecvBufferSPI, 0, sizeof( pRecvBufferSPI ) ) ; recvDone = false ; } } else { data = USART1->US_RHR ; printf( "US_RHR:0x%x\n\r", data ) ; /* slave in */ USART_ReadBuffer( USART1, pRecvBufferUSART1, BUFFER_SIZE ) ; USART_EnableIt( USART1, US_IER_RXBUFF ) ; printf( "----SPI MASTER WRITE----\n\r" ) ; /* master out*/ SPI_WriteBuffer( SPI, Buffer, BUFFER_SIZE ) ; while ( !recvDone ) ; if ( recvDone ) { if ( strncmp( pRecvBufferUSART1, Buffer, BUFFER_SIZE ) ) { printf( " -F-: Failed!\n\r" ) ; } else { /* successfully received*/ _DumpInfo( pRecvBufferUSART1, BUFFER_SIZE ) ; } printf( "----END of SPI MASTER WRITE----\n\r" ) ; memset( pRecvBufferUSART1, 0, sizeof( pRecvBufferUSART1 ) ) ; recvDone = false ; } } break ; case 'r': case 'R': if ( glob_state == STATE_UM_SS ) { data = USART1->US_RHR ; printf( "US_RHR:0x%x\n\r", data ) ; /* slave out */ SPI_WriteBuffer( SPI, Buffer, BUFFER_SIZE ) ; /* master read */ USART_ReadBuffer( USART1, pRecvBufferUSART1, BUFFER_SIZE ) ; USART_EnableIt( USART1, US_IER_RXBUFF ) ; /* start transmission */ USART_WriteBuffer( BOARD_USART_BASE, Buffer1, BUFFER_SIZE ) ; printf( "----USART1 MASTER READ----\n\r" ) ; while ( !recvDone ) ; if ( recvDone ) { if ( strncmp( pRecvBufferUSART1, Buffer, BUFFER_SIZE ) ) { printf( " -F-: Failed!\n\r" ) ; } else { /* successfully received*/ _DumpInfo( pRecvBufferUSART1, BUFFER_SIZE ) ; } printf( "----END of USART1 MASTER READ----\n\r" ) ; memset( pRecvBufferUSART1, 0, sizeof( pRecvBufferUSART1 ) ) ; recvDone = false ; } } else { data = SPI->SPI_RDR ; printf( "SPI_RDR:0x%x\n\r", data ) ; /* slave out */ USART_WriteBuffer( USART1, Buffer, BUFFER_SIZE ) ; printf( "----SPI MASTER READ----\n\r" ) ; /* master read */ SPI_ReadBuffer( SPI, pRecvBufferSPI, BUFFER_SIZE ) ; SPI_EnableIt( SPI, SPI_IER_RXBUFF ) ; /* start transmission */ SPI_WriteBuffer( SPI, Buffer1, BUFFER_SIZE ) ; while ( !recvDone ) ; if ( recvDone ) { if ( strncmp( pRecvBufferSPI, Buffer, BUFFER_SIZE ) ) { printf( " -F-: Failed!\n\r" ) ; } else { /* successfully received */ _DumpInfo( pRecvBufferSPI, BUFFER_SIZE ) ; } printf("----END of SPI MASTER READ----\n\r"); memset(pRecvBufferSPI,0,sizeof(pRecvBufferSPI)); recvDone = false; } } break ; case 's': case 'S': if ( glob_state == STATE_UM_SS ) { glob_state = STATE_US_SM ; _ConfigureUsart( glob_state ) ; _ConfigureSpi( glob_state ) ; printf( "-- USART1 as SLAVE,SPI as MASTER\n\r" ) ; } else { glob_state = STATE_UM_SS ; _ConfigureUsart( glob_state ) ; _ConfigureSpi( glob_state ) ; printf( "-- USART1 as MASTER,SPI as SLAVE\n\r" ) ; } break ; case 'm': case 'M': _DisplayMainmenu() ; break ; } } }