mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-05-16 13:19:14 +02:00
Kevin Thomas
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/**
|
|
* @file main.c
|
|
* @brief UART demonstration: echo received characters in uppercase.
|
|
* @author Kevin Thomas
|
|
* @date 2026
|
|
*
|
|
* Demonstrates hardware UART0 using the bare-metal UART driver.
|
|
* Characters typed into a terminal via a USB-to-UART adapter
|
|
* are echoed back in uppercase.
|
|
*
|
|
* Wiring:
|
|
* GPIO0 (TX) -> USB-to-UART adapter RX
|
|
* GPIO1 (RX) -> USB-to-UART adapter TX
|
|
* GND -> USB-to-UART adapter GND
|
|
*
|
|
* MIT License
|
|
*
|
|
* Copyright (c) 2026 Kevin Thomas
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
#include "rp2350_uart.h"
|
|
|
|
int main(void)
|
|
{
|
|
uart_puts("UART driver ready (115200 8N1)\r\n");
|
|
uart_puts("Type characters to echo them back in UPPERCASE:\r\n");
|
|
while (1)
|
|
{
|
|
if (uart_is_readable())
|
|
{
|
|
char c = uart_getchar();
|
|
char upper = uart_to_upper(c);
|
|
uart_putchar(upper);
|
|
}
|
|
}
|
|
}
|