Other Parts Discussed in Thread: SYSCONFIG
Tool/software:
The following code stops transmitting after some time, I have tried to solve the problem but have been unable to. Need help regarding this.
#include "ti_msp_dl_config.h"
#include <stdio.h>
uint8_t gWelcomeMsg[] = "\r\n==== MSPM0 Console Test ====\r\n";
uint8_t gTestingMsg[] = "> Testing...0\r\n";
volatile bool gConsoleTxTransmitted, gConsoleTxDMATransmitted, gTransmitReady;
void UART_Console_write(const uint8_t *data, uint16_t size)
{
printf("Starting DMA transmission: %s\n", data); // Debug log
DL_DMA_disableChannel(DMA, DMA_CH0_CHAN_ID);
DL_DMA_setSrcAddr(DMA, DMA_CH0_CHAN_ID, (uint32_t)(data));
DL_DMA_setDestAddr(DMA, DMA_CH0_CHAN_ID, (uint32_t)(&UART_0_INST->TXDATA));
DL_DMA_setTransferSize(DMA, DMA_CH0_CHAN_ID, size);
DL_SYSCTL_disableSleepOnExit();
DL_DMA_enableChannel(DMA, DMA_CH0_CHAN_ID);
while (false == gConsoleTxDMATransmitted) {
printf("Waiting for DMA TX...\n"); // Debug log
}
while (false == gConsoleTxTransmitted) {
printf("Waiting for UART TX...\n"); // Debug log
}
printf("DMA transmission complete\n"); // Debug log
gConsoleTxTransmitted = false;
gConsoleTxDMATransmitted = false;
}
int main(void)
{
gTransmitReady = false;
gConsoleTxTransmitted = false;
gConsoleTxDMATransmitted = false;
uint32_t increment = 0;
SYSCFG_DL_init();
NVIC_EnableIRQ(UART_0_INST_INT_IRQN);
NVIC_EnableIRQ(TIMER_0_INST_INT_IRQN);
/* Write welcome message */
UART_Console_write(&gWelcomeMsg[0], sizeof(gWelcomeMsg));
while (1) {
if (gTransmitReady == true) {
/* Will output "Testing...0", "Testing...1", etc. and loop after 9 */
gTransmitReady = false;
gTestingMsg[12] = '0' + increment;
increment = (increment + 1) % 10;
UART_Console_write(&gTestingMsg[0], sizeof(gTestingMsg));
} else {
__WFI();
}
}
}
void UART_0_INST_IRQHandler(void)
{
printf("UART IRQ: %d\n", DL_UART_Main_getPendingInterrupt(UART_0_INST)); // Debug log
switch (DL_UART_Main_getPendingInterrupt(UART_0_INST)) {
case DL_UART_MAIN_IIDX_EOT_DONE:
gConsoleTxTransmitted = true;
break;
case DL_UART_MAIN_IIDX_DMA_DONE_TX:
gConsoleTxDMATransmitted = true;
break;
case DL_UART_IIDX_OVERRUN_ERROR: // Handle overrun errors
printf("UART Overrun Error! Resetting...\n");
break;
case DL_UART_IIDX_NOISE_ERROR: // Handle noise errors
printf("UART Noise Error!\n");
break;
default:
printf("Unexpected UART interrupt");
break;
}
}
void TIMER_0_INST_IRQHandler(void)
{
switch (DL_Timer_getPendingInterrupt(TIMER_0_INST)) {
case DL_TIMER_IIDX_ZERO:
gTransmitReady = true;
DL_GPIO_togglePins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN | GPIO_LEDS_USER_TEST_PIN);
printf("Timer interrupt\n");
break;
default:
break;
}
}
