stmhal: Overhaul UART class to use read/write, and improve it.v1.3.4

UART object now uses a stream-like interface: read, readall, readline,
readinto, readchar, write, writechar.

Timeouts are configured when the UART object is initialised, using
timeout and timeout_char keyword args.

The object includes optional read buffering, using interrupts.  You can set
the buffer size dynamically using read_buf_len keyword arg.  A size of 0
disables buffering.

1 files changed, 22 insertions, 0 deletions

diff --git a/stmhal/stm32f4xx_it.c b/stmhal/stm32f4xx_it.c
index 74fdf53d1..eb65b1a54 100644
--- a/stmhal/stm32f4xx_it.c
+++ b/stmhal/stm32f4xx_it.c
@@ -76,6 +76,7 @@
 #include "obj.h"
 #include "extint.h"
 #include "timer.h"
+#include "uart.h"
 #include "storage.h"
 
 extern void __fatal_error(const char*);
@@ -395,3 +396,24 @@ void TIM8_UP_TIM13_IRQHandler(void) {
 void TIM8_TRG_COM_TIM14_IRQHandler(void) {
     timer_irq_handler(14);
 }
+
+// UART/USART IRQ handlers
+void USART1_IRQHandler(void) {
+    uart_irq_handler(1);
+}
+
+void USART2_IRQHandler(void) {
+    uart_irq_handler(2);
+}
+
+void USART3_IRQHandler(void) {
+    uart_irq_handler(3);
+}
+
+void UART4_IRQHandler(void) {
+    uart_irq_handler(4);
+}
+
+void USART6_IRQHandler(void) {
+    uart_irq_handler(6);
+}