From d468ccac449968009cbbd2eabd8cfa7d7f3a35e5 Mon Sep 17 00:00:00 2001
From: iperry <iperry@749a229e-a60e-11de-b98f-4500b42dc123>
Date: Wed, 13 Jan 2010 20:25:45 +0000
Subject: added serial1 support

git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@113 749a229e-a60e-11de-b98f-4500b42dc123
---
 src/lib/usart.c                    | 7 +++++++
 src/wiring/comm/HardwareSerial.cpp | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/lib/usart.c b/src/lib/usart.c
index 96e920c..0fd4e05 100644
--- a/src/lib/usart.c
+++ b/src/lib/usart.c
@@ -76,6 +76,11 @@ typedef struct usart_port {
     volatile uint32 GTPR;     // Guard time and prescaler register
 } usart_port;
 
+void USART1_IRQHandler(void) {
+    /* Read the data  */
+    ring_buf1.buf[ring_buf1.tail++] = (uint8_t)(((usart_port*)(USART1_BASE))->DR);
+    ring_buf1.tail %= USART_RECV_BUF_SIZE;
+}
 
 /* Don't overrun your buffer, seriously  */
 void USART2_IRQHandler(void) {
@@ -118,6 +123,8 @@ void usart_init(uint8 usart_num, uint32 baud) {
         port = (usart_port*)USART1_BASE;
         ring_buf = &ring_buf1;
         clk_speed = USART1_CLK;
+        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
+        REG_SET(NVIC_ISER1, BIT(5));
         break;
     case 2:
         port = (usart_port*)USART2_BASE;
diff --git a/src/wiring/comm/HardwareSerial.cpp b/src/wiring/comm/HardwareSerial.cpp
index 3d0a0ce..04d8d18 100644
--- a/src/wiring/comm/HardwareSerial.cpp
+++ b/src/wiring/comm/HardwareSerial.cpp
@@ -72,6 +72,8 @@ void HardwareSerial::begin(uint32_t baud) {
     case 1:
         gpio_set_mode(USART1_TX_PORT, USART1_TX_PIN, GPIO_MODE_AF_OUTPUT_PP);
         gpio_set_mode(USART1_RX_PORT, USART1_RX_PIN, GPIO_MODE_INPUT_FLOATING);
+        /* Turn off any pwm  */
+        timers_disable_channel(1, 2);
         break;
     case 2:
         gpio_set_mode(USART2_TX_PORT, USART2_TX_PIN, GPIO_MODE_AF_OUTPUT_PP);
-- 
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