1 files changed, 34 insertions, 0 deletions
diff --git a/master/main/main.c b/master/main/main.c
new file mode 100644
index 0000000..ee170bc
--- /dev/null
+++ b/master/main/main.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include "driver/uart.h"
+
+#define ECHECK(...) ESP_ERROR_CHECK(__VA_ARGS__)
+
+QueueHandle_t uart_queue;
+
+void uart_setup(void);
+
+void app_main(void)
+{
+    uart_setup();
+   
+    char message[] = "Hello World\n";
+    uart_write_bytes(UART_NUM_0, message, sizeof(message));
+}
+
+void uart_setup(void)
+{
+    // stty -F /dev/ttyUSB0 cs8 -parenb -crtscts -cstopb
+    uart_config_t uart_config = {
+        .baud_rate = 9600,
+        .data_bits = UART_DATA_8_BITS,
+        .parity    = UART_PARITY_DISABLE,
+        .stop_bits = UART_STOP_BITS_1,
+        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+        .source_clk = UART_SCLK_DEFAULT,
+    };
+    
+    #define UART_BUFFER_SIZE 2048
+    ECHECK(uart_param_config(UART_NUM_0, &uart_config));
+    ECHECK(uart_driver_install(UART_NUM_0, UART_BUFFER_SIZE, UART_BUFFER_SIZE, 10, &uart_queue, 0));
+}
+