mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
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Kevin Thomas
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/**
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* @file rp2350_uart.h
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* @brief UART0 driver header for RP2350.
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* @author Kevin Thomas
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* @date 2026
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*
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* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
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* 115200 baud (12 MHz XOSC clock).
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*
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* MIT License
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*
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* Copyright (c) 2026 Kevin Thomas
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __RP2350_UART_H
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#define __RP2350_UART_H
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#include "rp2350.h"
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/**
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* @brief Release UART0 from reset and wait until ready.
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* @retval None
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*/
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void uart_release_reset(void);
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/**
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* @brief Initialize UART0 pins, baud rate, line control, and enable.
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* @retval None
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*/
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void uart_init(void);
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/**
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* @brief Check whether a received byte is waiting in the UART FIFO.
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* @retval bool true if at least one byte is available
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*/
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bool uart_is_readable(void);
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/**
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* @brief Read one character from UART0 (blocking).
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* @retval char the received character
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*/
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char uart_getchar(void);
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/**
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* @brief Transmit one character over UART0 (blocking).
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* @param c character to transmit
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* @retval None
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*/
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void uart_putchar(char c);
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/**
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* @brief Transmit a null-terminated string over UART0.
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* @param str pointer to the string to send
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* @retval None
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*/
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void uart_puts(const char *str);
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/**
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* @brief Convert a lowercase ASCII character to uppercase.
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* @param c input character
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* @retval char uppercase equivalent or original character
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*/
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char uart_to_upper(char c);
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#endif /* __RP2350_UART_H */
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