Hi Ti community,
first thanks for advices that helped me to designed my custom board.
I used TIVA EK-TM4C123GXL as debugger, with CCS V5.4, and in custom board I used TM4C123FH6PMI.
I programmed some code like Blinker and channel 0 uart. all of them work very well.
now I tried to use uart3 in port C PIN6 and 7. but it doesn't work, it doesn't send anything. I wrote simple code exactly like channel 0 but it doesn't work.
this is my first codes with TI microcontrollers excuse me if my questions are so amateur.
channel 0 working code:
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
int main(void) {
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
UARTEnable(UART0_BASE);
while (1)
{
UARTCharPut(UART0_BASE, 'H');
UARTCharPut(UART0_BASE, 'i');
SysCtlDelay(2000000);
}
}
and this is channel 3 non working code:
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
int main(void) {
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART3);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
GPIOPinTypeUART(GPIO_PORTC_BASE, GPIO_PIN_6 | GPIO_PIN_7);
UARTConfigSetExpClk(UART3_BASE, SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
UARTEnable(UART3_BASE);
while (1)
{
UARTCharPut(UART3_BASE, 'H');
UARTCharPut(UART3_BASE, 'i');
SysCtlDelay(2000000);
}
}
I should say I checked connections very well and all connection are ok.
