Merge pull request #148 from someweisguy:feature/idf-5_2

Support for ESP-IDF v5.2

Author: someweisguy

src/dmx/hal/uart.c

@@ -7,10 +7,13 @@
 #include "rdm/include/driver.h"
 #include "rdm/include/uid.h"
 
-#if ESP_IDF_VERSION_MAJOR >= 5
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
 #include "esp_private/esp_clk.h"
 #include "esp_private/periph_ctrl.h"
 #include "esp_timer.h"
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0)
+#include "soc/uart_periph.h"
+#endif
 #else
 #include "driver/periph_ctrl.h"
 #include "driver/timer.h"
@@ -335,10 +338,20 @@ bool dmx_uart_init(dmx_port_t dmx_num, void *isr_context, int isr_flags) {
     periph_module_reset(uart_periph_signal[dmx_num].module);
 #endif
   }
-#if ESP_IDF_VERSION_MAJOR >= 5
-  uart_ll_set_sclk(uart->dev, UART_SCLK_DEFAULT);
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   uint32_t sclk_freq;
+#if CONFIG_IDF_TARGET_ESP32C6
+  // UART2 on C6 is a LP UART, with fixed GPIO pins for tx, rx, and rts
+  if (dmx_num == 2) {
+    LP_CLKRST.lpperi.lp_uart_clk_sel = 0;  // Use LP_UART_SCLK_LP_FAST
+  } else {
+    uart_ll_set_sclk(uart->dev, UART_SCLK_DEFAULT);
+  }
   uart_get_sclk_freq(UART_SCLK_DEFAULT, &sclk_freq);
+#else
+  uart_ll_set_sclk(uart->dev, UART_SCLK_DEFAULT);
+  uart_get_sclk_freq(UART_SCLK_DEFAULT, &sclk_freq);
+#endif
   uart_ll_set_baudrate(uart->dev, DMX_BAUD_RATE, sclk_freq);
 #else
   uart_ll_set_sclk(uart->dev, UART_SCLK_APB);
@@ -380,7 +393,7 @@ bool dmx_uart_set_pin(dmx_port_t dmx_num, int tx, int rx, int rts) {
 
 uint32_t dmx_uart_get_baud_rate(dmx_port_t dmx_num) {
   struct dmx_uart_t *uart = &dmx_uart_context[dmx_num];
-#if ESP_IDF_VERSION_MAJOR >= 5
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   uint32_t sclk_freq;
   uart_get_sclk_freq(UART_SCLK_DEFAULT, &sclk_freq);
   return uart_ll_get_baudrate(uart->dev, sclk_freq);
@@ -391,7 +404,7 @@ uint32_t dmx_uart_get_baud_rate(dmx_port_t dmx_num) {
 
 void dmx_uart_set_baud_rate(dmx_port_t dmx_num, uint32_t baud_rate) {
   struct dmx_uart_t *uart = &dmx_uart_context[dmx_num];
-#if ESP_IDF_VERSION_MAJOR >= 5
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   uint32_t sclk_freq;
   uart_get_sclk_freq(UART_SCLK_DEFAULT, &sclk_freq);
   uart_ll_set_baudrate(uart->dev, baud_rate, sclk_freq);