mcjurij
commented
7 months ago Either baud settings wrong or baud rate too high.
Cheers, Jurij
On Sat, Mar 2, 2024 at 11:44 AM Zaman Imran @.***> wrote:
I am working on a recieving example but I recive the garbage data. ``#include
include "pico/stdlib.h"
include "hardware/uart.h"
include "hardware/irq.h"
include "hardware/rtc.h"
include "pico/util/datetime.h"
define UART_ID uart0
define BAUD_RATE 115200
define UART_TX_PIN 0
define UART_RX_PIN 1
define DATA_BITS 8
define STOP_BITS 1
define PARITY UART_PARITY_NONE
define UART_BUFFER_SIZE 32
char buf[UART_BUFFER_SIZE]; uint32_t rx_buf_index = 0;
void on_uart_rx();
int main() { stdio_init_all(); char datetime_buf[256]; char *datetime_str = &datetime_buf[0]; datetime_t t = { .year = 2024, .month = 03, .day = 01, .dotw = 5, .hour = 15, .min = 45, .sec = 00 }; rtc_init(); rtc_set_datetime(&t); sleep_us(64); const uint LED_PIN = 25; gpio_init(LED_PIN); gpio_set_dir(LED_PIN, GPIO_OUT); gpio_set_function(UART_TX_PIN, GPIO_FUNC_UART); gpio_set_function(UART_RX_PIN, GPIO_FUNC_UART); uart_init(UART_ID, 2400); int __unused actual = uart_set_baudrate(UART_ID, BAUD_RATE); uart_set_hw_flow(UART_ID,false,false); uart_set_format(UART_ID,DATA_BITS,STOP_BITS,PARITY); uart_set_fifo_enabled(UART_ID,false); // int UART_IRQ = UART_ID == uart0 ? UART0_IRQ : UART1_IRQ; `
// irq_set_exclusive_handler(UART_IRQ, on_uart_rx); // irq_set_enabled(UART_IRQ,true);
// uart_set_irq_enables(UART_ID, true, false);
while (true) { // rtc_get_datetime(&t); // datetime_to_str(datetime_str,sizeof(datetime_buf), &t); // printf("\r%s ", datetime_str); // sleep_ms(100); gpio_put(LED_PIN, 1); sleep_ms(250); gpio_put(LED_PIN, 0); sleep_ms(250);
while(uart_is_readable(UART_ID)) { uint8_t ch = uart_getc(UART_ID); printf("%s",ch);}
// uart_putc_raw(UART_ID, 'A'); // uart_putc(UART_ID,'B'); // uart_puts(UART_ID, "Hello, UART!\n");}
}
// RX interrupt handler // void on_uart_rx() {
// }`
Output: The garbage data image.png (view on web) https://github.com/raspberrypi/pico-examples/assets/134497987/76120daa-07e1-4fdb-8922-dc157694238b
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engrzamanimran
peterharperuk
I am working on a recieving example but I recive the garbage data. ``#include
include "pico/stdlib.h"
include "hardware/uart.h"
include "hardware/irq.h"
include "hardware/rtc.h"
include "pico/util/datetime.h"
define UART_ID uart0
define BAUD_RATE 115200
define UART_TX_PIN 0
define UART_RX_PIN 1
define DATA_BITS 8
define STOP_BITS 1
define PARITY UART_PARITY_NONE
define UART_BUFFER_SIZE 32
char buf[UART_BUFFER_SIZE]; uint32_t rx_buf_index = 0;
void on_uart_rx();
int main() { stdio_init_all(); char datetime_buf[256]; char *datetime_str = &datetime_buf[0]; datetime_t t = { .year = 2024, .month = 03, .day = 01, .dotw = 5, .hour = 15, .min = 45, .sec = 00 }; rtc_init(); rtc_set_datetime(&t); sleep_us(64); const uint LED_PIN = 25; gpio_init(LED_PIN); gpio_set_dir(LED_PIN, GPIO_OUT); gpio_set_function(UART_TX_PIN, GPIO_FUNC_UART); gpio_set_function(UART_RX_PIN, GPIO_FUNC_UART); uart_init(UART_ID, 2400); int __unused actual = uart_set_baudrate(UART_ID, BAUD_RATE); uart_set_hw_flow(UART_ID,false,false); uart_set_format(UART_ID,DATA_BITS,STOP_BITS,PARITY); uart_set_fifo_enabled(UART_ID,false); // int UART_IRQ = UART_ID == uart0 ? UART0_IRQ : UART1_IRQ; `
}
// RX interrupt handler // void on_uart_rx() {
// }`
Output: The garbage data