UART driver refactor (#11637)

2 files changed, 0 insertions, 180 deletions

diff --git a/tmk_core/common/uart.c b/tmk_core/common/uart.c
deleted file mode 100644
index 150e256c8..000000000
--- a/tmk_core/common/uart.c
+++ /dev/null
@@ -1,172 +0,0 @@
-// TODO: Teensy support(ATMega32u4/AT90USB128)
-// Fixed for Arduino Duemilanove ATmega168p by Jun Wako
-/* UART Example for Teensy USB Development Board
- * http://www.pjrc.com/teensy/
- * Copyright (c) 2009 PJRC.COM, LLC
- *
- * 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.
- */
-
-// Version 1.0: Initial Release
-// Version 1.1: Add support for Teensy 2.0, minor optimizations
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-
-#include "uart.h"
-
-#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
-#    define UDRn UDR0
-#    define UBRRnL UBRR0L
-#    define UCSRnA UCSR0A
-#    define UCSRnB UCSR0B
-#    define UCSRnC UCSR0C
-#    define U2Xn U2X0
-#    define RXENn RXEN0
-#    define TXENn TXEN0
-#    define RXCIEn RXCIE0
-#    define UCSZn1 UCSZ01
-#    define UCSZn0 UCSZ00
-#    define UDRIEn UDRIE0
-#    define USARTn_UDRE_vect USART_UDRE_vect
-#    define USARTn_RX_vect USART_RX_vect
-#elif defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega32U2__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
-#    define UDRn UDR1
-#    define UBRRnL UBRR1L
-#    define UCSRnA UCSR1A
-#    define UCSRnB UCSR1B
-#    define UCSRnC UCSR1C
-#    define U2Xn U2X1
-#    define RXENn RXEN1
-#    define TXENn TXEN1
-#    define RXCIEn RXCIE1
-#    define UCSZn1 UCSZ11
-#    define UCSZn0 UCSZ10
-#    define UDRIEn UDRIE1
-#    define USARTn_UDRE_vect USART1_UDRE_vect
-#    define USARTn_RX_vect USART1_RX_vect
-#elif defined(__AVR_ATmega32A__)
-#    define UDRn UDR
-#    define UBRRnL UBRRL
-#    define UCSRnA UCSRA
-#    define UCSRnB UCSRB
-#    define UCSRnC UCSRC
-#    define U2Xn U2X
-#    define RXENn RXEN
-#    define TXENn TXEN
-#    define RXCIEn RXCIE
-#    define UCSZn1 UCSZ1
-#    define UCSZn0 UCSZ0
-#    define UDRIEn UDRIE
-#    define USARTn_UDRE_vect USART_UDRE_vect
-#    define USARTn_RX_vect USART_RX_vect
-#endif
-
-// These buffers may be any size from 2 to 256 bytes.
-#define RX_BUFFER_SIZE 64
-#define TX_BUFFER_SIZE 256
-
-static volatile uint8_t tx_buffer[TX_BUFFER_SIZE];
-static volatile uint8_t tx_buffer_head;
-static volatile uint8_t tx_buffer_tail;
-static volatile uint8_t rx_buffer[RX_BUFFER_SIZE];
-static volatile uint8_t rx_buffer_head;
-static volatile uint8_t rx_buffer_tail;
-
-// Initialize the UART
-void uart_init(uint32_t baud) {
-    cli();
-    UBRRnL         = (F_CPU / 4 / baud - 1) / 2;
-    UCSRnA         = (1 << U2Xn);
-    UCSRnB         = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn);
-    UCSRnC         = (1 << UCSZn1) | (1 << UCSZn0);
-    tx_buffer_head = tx_buffer_tail = 0;
-    rx_buffer_head = rx_buffer_tail = 0;
-    sei();
-}
-
-// Transmit a byte
-void uart_putchar(uint8_t c) {
-    uint8_t i;
-
-    i = tx_buffer_head + 1;
-    if (i >= TX_BUFFER_SIZE) i = 0;
-    // return immediately to avoid deadlock when interrupt is disabled(called from ISR)
-    if (tx_buffer_tail == i && (SREG & (1 << SREG_I)) == 0) return;
-    while (tx_buffer_tail == i)
-        ;  // wait until space in buffer
-    // cli();
-    tx_buffer[i]   = c;
-    tx_buffer_head = i;
-    UCSRnB         = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn) | (1 << UDRIEn);
-    // sei();
-}
-
-// Receive a byte
-uint8_t uart_getchar(void) {
-    uint8_t c, i;
-
-    while (rx_buffer_head == rx_buffer_tail)
-        ;  // wait for character
-    i = rx_buffer_tail + 1;
-    if (i >= RX_BUFFER_SIZE) i = 0;
-    c              = rx_buffer[i];
-    rx_buffer_tail = i;
-    return c;
-}
-
-// Return the number of bytes waiting in the receive buffer.
-// Call this before uart_getchar() to check if it will need
-// to wait for a byte to arrive.
-uint8_t uart_available(void) {
-    uint8_t head, tail;
-
-    head = rx_buffer_head;
-    tail = rx_buffer_tail;
-    if (head >= tail) return head - tail;
-    return RX_BUFFER_SIZE + head - tail;
-}
-
-// Transmit Interrupt
-ISR(USARTn_UDRE_vect) {
-    uint8_t i;
-
-    if (tx_buffer_head == tx_buffer_tail) {
-        // buffer is empty, disable transmit interrupt
-        UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn);
-    } else {
-        i = tx_buffer_tail + 1;
-        if (i >= TX_BUFFER_SIZE) i = 0;
-        UDRn           = tx_buffer[i];
-        tx_buffer_tail = i;
-    }
-}
-
-// Receive Interrupt
-ISR(USARTn_RX_vect) {
-    uint8_t c, i;
-
-    c = UDRn;
-    i = rx_buffer_head + 1;
-    if (i >= RX_BUFFER_SIZE) i = 0;
-    if (i != rx_buffer_tail) {
-        rx_buffer[i]   = c;
-        rx_buffer_head = i;
-    }
-}
diff --git a/tmk_core/common/uart.h b/tmk_core/common/uart.h
deleted file mode 100644
index ea247b17b..000000000
--- a/tmk_core/common/uart.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-void    uart_init(uint32_t baud);
-void    uart_putchar(uint8_t c);
-uint8_t uart_getchar(void);
-uint8_t uart_available(void);