Update UART driver API (#14839)

* Add uart_puts() and uart_gets()

* Add some docs

* Rework API

* Formatting

* Update docs/uart_driver.md

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

* Simplify a uart_write() loop

* Update platforms/avr/drivers/uart.c

Co-authored-by: Joel Challis <git@zvecr.com>

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
Co-authored-by: Joel Challis <git@zvecr.com>

2 files changed, 12 insertions, 4 deletions

diff --git a/platforms/chibios/drivers/uart.c b/platforms/chibios/drivers/uart.c
index 0e8e0515a..297c1892c 100644
--- a/platforms/chibios/drivers/uart.c
+++ b/platforms/chibios/drivers/uart.c
@@ -39,12 +39,16 @@ void uart_init(uint32_t baud) {
     }
 }
 
-void uart_putchar(uint8_t c) { sdPut(&SERIAL_DRIVER, c); }
+void uart_write(uint8_t data) { sdPut(&SERIAL_DRIVER, c); }
 
-uint8_t uart_getchar(void) {
+uint8_t uart_read(void) {
     msg_t res = sdGet(&SERIAL_DRIVER);
 
     return (uint8_t)res;
 }
 
+void uart_transmit(const uint8_t *data, uint16_t length) { sdWrite(&SERIAL_DRIVER, data, length); }
+
+void uart_receive(uint8_t *data, uint16_t length) { sdRead(&SERIAL_DRIVER, data, length); }
+
 bool uart_available(void) { return !sdGetWouldBlock(&SERIAL_DRIVER); }
diff --git a/platforms/chibios/drivers/uart.h b/platforms/chibios/drivers/uart.h
index b4e20e9fd..5bc487590 100644
--- a/platforms/chibios/drivers/uart.h
+++ b/platforms/chibios/drivers/uart.h
@@ -70,8 +70,12 @@
 
 void uart_init(uint32_t baud);
 
-void uart_putchar(uint8_t c);
+void uart_write(uint8_t data);
 
-uint8_t uart_getchar(void);
+uint8_t uart_read(void);
+
+void uart_transmit(const uint8_t *data, uint16_t length);
+
+void uart_receive(uint8_t *data, uint16_t length);
 
 bool uart_available(void);