UART Driver with UART4/5

[Triest]

I'm trining to get the UART4/5 to work with the USART Drivers, but i'm unable to get any output from UART4. All example on the internet are using USART1, USART2, USART3 or USART6. So im wondering if the current Version (2.6.6) supportes USART Drivers with UART4/5. Do you have any exmple code or suggestions thats use USART4/5? Also i have tried to get the Serial Driver working with UART4:

Code: Select all

#include "ch.h"
#include "hal.h"
#include "chprintf.h"

static SerialConfig sd_cfg = { 115200, 0, 0, 0 };

int main(void) {
   halInit();
   chSysInit();

   sdStart(&SD4, &sd_cfg);
   palSetPadMode(GPIOC, 10, PAL_MODE_ALTERNATE(7));
   palSetPadMode(GPIOC, 11, PAL_MODE_ALTERNATE(7));

   chprintf((BaseSequentialStream *) &SD4, "Hello, World! \n");
}

Any help would be appreciated.

[Giovanni]

Hi,

Make sure that those pins are not connected on the board to something else there could be a conflict, also check connections.

In order to check the driver functionality you may put a breakpoint in the ISR, see serial_lld.c, if that is reached then the driver is working.

Giovanni

[Triest]

Ok every thing is working fine with the right alternate function :/

Code: Select all

int main(void) {
   halInit();
   chSysInit();

   sdStart(&SD4, &sd_cfg);
   palSetPadMode(GPIOA, 0, PAL_MODE_ALTERNATE(8));
   palSetPadMode(GPIOA, 1, PAL_MODE_ALTERNATE(8));

   while (1) {
      chprintf((BaseSequentialStream *) &SD4, "Hello, World! \n");
   }
}