Diff: Methods/sb_uart3.cpp

Revision:

0:62a1c91a859a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Methods/sb_uart3.cpp	Fri Feb 18 22:28:05 2011 +0000
@@ -0,0 +1,63 @@
+/*
+    Copyright (c) 2010 Andy Kirkham
+ 
+    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.
+*/
+
+#include "../SerialBuffered.h"
+#include "../sb_globals.h"
+
+extern "C" void SerialBuffered_ISR(unsigned long, int);
+
+extern "C" static void SerialBuffered_ISR_3(void) __irq { SerialBuffered_ISR(LPC_UART3_BASE, 3); }
+
+void SerialBuffered::set_uart3(PinName tx, PinName rx) {
+    volatile char c __attribute__((unused));
+    unsigned ier = 0;
+
+    if (tx == NC && rx == NC) return; // Eh, why would one?
+    
+    LPC_SC->PCONP       |=  (1UL << 25);
+    LPC_SC->PCLKSEL1    &= ~(3UL << 18);
+    LPC_SC->PCLKSEL1    |=  (1UL << 18);
+    if (rx == p10) { 
+        set_rx_buffer_size(SERIALBUFFERED_BUFFER_SIZE); 
+        LPC_PINCON->PINSEL0 &= ~(3UL << 2); 
+        LPC_PINCON->PINSEL0 |= (2UL << 2); 
+        ier |= 1; 
+    }
+    else { reset_uart_rx(3); }
+    
+    if (tx == p9) { 
+        set_tx_buffer_size(SERIALBUFFERED_BUFFER_SIZE); 
+        LPC_PINCON->PINSEL0 &= ~(3UL << 0); 
+        LPC_PINCON->PINSEL0 |= (2UL << 0); 
+        ier |= 2; 
+    }
+    else { reset_uart_tx(3); }
+    
+    if (ier) {
+        baud(9600);
+        format(SerialBuffered::WordLength8, SerialBuffered::NoParity, SerialBuffered::StopBit1);
+        LPC_UART3->FCR = 0x7;
+        NVIC_SetVector(UART3_IRQn, (uint32_t)SerialBuffered_ISR_3);
+        NVIC_EnableIRQ(UART3_IRQn);
+        LPC_UART3->IER = ier;
+    }
+}