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This commit is contained in:
Tester23 2025-09-13 17:13:07 +02:00
parent d0f9821e69
commit e4dc19a94b
2 changed files with 24 additions and 7 deletions
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23
src/driver/drv_dmx512.c
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@ -73,17 +73,26 @@ void DMX_Init() {
ws_export.setLEDCount = DMX_SetLEDCount;
LEDS_InitShared(&ws_export);
HAL_UART_Init(250000, 2, false);
}
void HAL_UART_Flush(void);
void HAL_SetBaud(uint32_t baud);
void DMX_OnEverySecond() {
// BREAK: pull TX low manually
HAL_PIN_Setup_Output(dmx_pin);
HAL_PIN_SetOutputValue(dmx_pin, 0);
HAL_Delay_us(120); // ≥88µs
HAL_PIN_SetOutputValue(dmx_pin, 1);
HAL_Delay_us(12); // MAB ≥8µs
//HAL_PIN_Setup_Output(dmx_pin);
//HAL_PIN_SetOutputValue(dmx_pin, 0);
//HAL_Delay_us(120); // ≥88µs
//HAL_PIN_SetOutputValue(dmx_pin, 1);
//HAL_Delay_us(12); // MAB ≥8µs
#define DMX_BREAK_DURATION_MICROS 88
uint32_t breakBaud = 1000000 * 8 / DMX_BREAK_DURATION_MICROS;
HAL_SetBaud(breakBaud);
HAL_UART_SendByte(0);
HAL_UART_Flush();
HAL_SetBaud(250000);
// restore UART and send DMX data
HAL_UART_Init(250000, 2, false);
for (int i = 0; i < DMX_BUFFER_SIZE; i++) {
HAL_UART_SendByte(g_dmxBuffer[i]);
}

8
src/hal/espidf/hal_uart_espidf.c
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@ -102,6 +102,14 @@ void HAL_UART_SendByte(byte b)
{
uart_write_bytes(uartnum, &b, 1);
}
void HAL_UART_Flush(void)
{
uart_flush(uartnum);
}
void HAL_SetBaud(uint32_t baud)
{
uart_set_baudrate(uartnum, baud);
}
int HAL_UART_Init(int baud, int parity, bool hwflowc)
{