#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/uart.h"

#define UART_PORT UART_NUM_0
#define BUF_SIZE 128

void uart_init() {
    uart_config_t uart_config = {
        .baud_rate = 115200,
        .data_bits = UART_DATA_8_BITS,
        .parity = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE
    };
    uart_param_config(UART_PORT, &uart_config);
    uart_set_pin(UART_PORT, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
    uart_driver_install(UART_PORT, BUF_SIZE * 2, 0, 0, NULL, 0);
}

void uart_task(void *pvParameters) {
    char data[BUF_SIZE]; // Changed from uint8_t to char
    char buffer[BUF_SIZE];
    int index = 0;
    int bufferIndex = 0;
    while (1) {
        int len = uart_read_bytes(UART_PORT, data + index, 1, 20 / portTICK_PERIOD_MS);
        if (len > 0){
          for (int i = 0; i < len; i++) {
        buffer[bufferIndex++] = data[i];
        // Check for newline character
        if (data[i] == '\n') {
            // Null-terminate the string and print
            buffer[bufferIndex] = '\0';
            printf("received %s\n", buffer);
            // Reset buffer index for next message
            bufferIndex = 0;
        }
        }
        }
        }
}
        
                //uart_write_bytes(UART_PORT, (const char *)(data + index), len);
            
        
    


void app_main() {
    uart_init();
    xTaskCreate(uart_task, "uart_task", 2048, NULL, 10, NULL);
}