Nulo/qmk_firmware
1
0
Fork 0
Code Releases Activity

Fix typo in uart.c backport and add 32A "support" (#8219)

Browse source
This commit is contained in:
Ryan 2020-03-06 23:55:15 +11:00 committed by GitHub
parent 918a85d342
commit 9810756ee0
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 27 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
tmk_core/common/uart.c
View file

@ -33,7 +33,7 @@
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
# define UDRn UDR0
# define UBRRn UBRR0
# define UBRRnL UBRR0L
# define UCSRnA UCSR0A
# define UCSRnB UCSR0B
# define UCSRnC UCSR0C
@ -44,11 +44,11 @@
# define UCSZn1 UCSZ01
# define UCSZn0 UCSZ00
# define UDRIEn UDRIE0
# define UDRE_vect USART_UDRE_vect
# define RX_vect USART_RX_vect
#elif defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega32U2__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
# 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 UBRRn UBRR1
# define UBRRnL UBRR1L
# define UCSRnA UCSR1A
# define UCSRnB UCSR1B
# define UCSRnC UCSR1C
@ -59,8 +59,23 @@
# define UCSZn1 UCSZ11
# define UCSZn0 UCSZ10
# define UDRIEn UDRIE1
# define UDRE_vect USART1_UDRE_vect
# define RX_vect USART1_RX_vect
# 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.
@ -77,7 +92,7 @@ static volatile uint8_t rx_buffer_tail;
// Initialize the UART
void uart_init(uint32_t baud) {
cli();
UBRRn = (F_CPU / 4 / baud - 1) / 2;
UBRRnL = (F_CPU / 4 / baud - 1) / 2;
UCSRnA = (1 << U2Xn);
UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn);
UCSRnC = (1 << UCSZn1) | (1 << UCSZn0);
@ -99,7 +114,7 @@ void uart_putchar(uint8_t c) {
// cli();
tx_buffer[i] = c;
tx_buffer_head = i;
UCSRB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn) | (1 << UDRIEn);
UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn) | (1 << UDRIEn);
// sei();
}
@ -129,7 +144,7 @@ uint8_t uart_available(void) {
}
// Transmit Interrupt
ISR(UDRE_vect) {
ISR(USARTn_UDRE_vect) {
uint8_t i;
if (tx_buffer_head == tx_buffer_tail) {
@ -138,13 +153,13 @@ ISR(UDRE_vect) {
} else {
i = tx_buffer_tail + 1;
if (i >= TX_BUFFER_SIZE) i = 0;
UDR0 = tx_buffer[i];
UDRn = tx_buffer[i];
tx_buffer_tail = i;
}
}
// Receive Interrupt
ISR(RX_vect) {
ISR(USARTn_RX_vect) {
uint8_t c, i;
c = UDRn;