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| Problem USART0 configuration YAGARGO AT91SAM9XE-EK(Solved) http://www.at91.com/samphpbb/viewtopic.php?f=9&t=20079 |
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| Author: | Slaxtrack [ Tue Apr 26, 2011 5:27 pm ] | ||
| Post subject: | Problem USART0 configuration YAGARGO AT91SAM9XE-EK(Solved) | ||
I have the kit AT91SAM9XE-EK evaluation had never program on this platform Example configuration DBGUID-USART (Works) (GCC YAGARTO) DBGU_Configure void (unsigned int mode, unsigned int baudrate, unsigned int mck) { / / Reset receiver and transmitter & disable, disable interrupts AT91C_BASE_DBGU-> DBGU_CR = AT91C_US_RSTRX | AT91C_US_RSTTX; AT91C_BASE_DBGU-> DBGU_IDR = 0xFFFFFFFF; / / Set baud rate AT91C_BASE_DBGU-> DBGU_BRGR = mck / (baudrate * 16); / / Set mode register AT91C_BASE_DBGU-> DBGU_MR = mode; / / Disable DMA channel AT91C_BASE_DBGU-> DBGU_PTCR = AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS; / / Enable receiver and transmitter AT91C_BASE_DBGU-> DBGU_CR = AT91C_US_RXEN | AT91C_US_TXEN; } ///////////////////////////////////////////////////////77 I want to set the USART0 but my code does not work ....guys i need your help ... I need to set the pio? (MY CODE) fOR EXAMPLE///////// # Define BOARD_MCK ((18432000 * 97 / 9) / 2) void main () { USART0_Configure (AT91C_US_PAR_NONE, 115200, BOARD_MCK) USART0_PutChar ('S'); USART0_PutChar ('o'); USART0_PutChar ('S'); } ////////////////////////////////////////////////// /////////////////////////// USART0_Configure void (unsigned int mode, unsigned int baudrate, unsigned int mck) { AT91C_BASE_US0-> US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX; AT91C_BASE_US0-> US_IDR = 0xFFFFFFFF; AT91C_BASE_US0-> US_BRGR = mck / (baudrate * 16); AT91C_BASE_US0-> US_MR = mode; AT91C_BASE_US0-> US_PTCR = AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS; AT91C_BASE_US0-> US_CR = AT91C_US_RXEN | AT91C_US_TXEN; } static void USART0_PutChar (unsigned char c) { / / Wait for the transmitter to Be Ready while ((AT91C_BASE_US0-> US_CSR & AT91C_US_TXEMPTY) == 0); AT91C_BASE_US0-> US_THR = c; while ((AT91C_BASE_US0-> US_CSR & AT91C_US_TXEMPTY) == 0); } ////////////////////////////////////////////////// ////////////////// Fix Problem For example USART0 const Pin at91board_usart[] = {PIN_USART0_RXD, PIN_USART0_TXD}; int main() { AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0); PIO_Configure(at91board_usart, PIO_LISTSIZE(at91board_usart)); USART_Configure(AT91C_BASE_US0,USART_MODE_ASYNCHRONOUS,19200,BOARD_MCK); USART_SetReceiverEnabled(AT91C_BASE_US0,1); USART_SetTransmitterEnabled(AT91C_BASE_US0,1); . . . } All features are found in the attached file !!!
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| Author: | CptTitanic [ Tue Apr 26, 2011 6:41 pm ] |
| Post subject: | Re: Problem USART0 configuration YAGARGO GCC AT91SAM9XE-EK |
Something along the lines of the following. /// USART0 TXD pin definition. #define PIN_USART0_TXD {1 << 4, AT91C_BASE_PIOB, AT91C_ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT} /// USART0 RXD pin definition. #define PIN_USART0_RXD {1 << 5, AT91C_BASE_PIOB, AT91C_ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT} /// USART0 RTS pin definition. #define PIN_USART0_RTS {1 << 26, AT91C_BASE_PIOB, AT91C_ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT} /// USART0 CTS pin definition. #define PIN_USART0_CTS {1 << 27, AT91C_BASE_PIOB, AT91C_ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT} /// USART0 SCK pin definition. #define PIN_USART0_SCK {1 << 31, AT91C_BASE_PIOA, AT91C_ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT} Using the AT91Lib, // Define the pins you want to be using const Pin pPins[] = {PIN_USART0_TXD, PIN_USART0_RXD}; // Enable peripheral clock PIOA, in case you forgot AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_PIOA; // Enable pins PIO_Configure(pPins, PIO_LISTSIZE(pPins)); // Enable peripheral clock USART0 AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_US0; //Now your USART initialization code. |
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| Author: | Slaxtrack [ Tue Apr 26, 2011 7:59 pm ] |
| Post subject: | Re: Problem USART0 configuration YAGARGO AT91SAM9XE-EK(Solved) |
THanks !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11 :D GRacias Saludos Cordiales Best Regards |
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