From: hackbard <hackbard@staubsauger.localdomain>
Date: Mon, 6 Aug 2007 00:40:55 +0000 (+0200)
Subject: uart fixes - at least it's transmitting bullshitz by now!
X-Git-Url: https://hackdaworld.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=404060c864c2d8bd444246078590c6f71f22217f;p=my-code%2Farm.git

uart fixes - at least it's transmitting bullshitz by now!
---

diff --git a/betty/Makefile b/betty/Makefile
index 6975542..1155b45 100644
--- a/betty/Makefile
+++ b/betty/Makefile
@@ -2,7 +2,7 @@ CC = gcc
 CFLAGS = -Wall
 
 ARMCC = /scratch/arm-elf/bin/arm-elf-gcc
-ARMCFLAGS = -Wall -mcpu=arm7tdmi 
+ARMCFLAGS = -Wall -mcpu=arm7tdmi-s 
 
 ARMOBJCOPY = /scratch/arm-elf/bin/arm-elf-objcopy
 
diff --git a/betty/fwbc.c b/betty/fwbc.c
index 46a342c..fecb753 100644
--- a/betty/fwbc.c
+++ b/betty/fwbc.c
@@ -14,21 +14,26 @@
 #define P_CLOCK			(OSC_CLOCK/P_DIV)
 
 typedef unsigned char u8;
+typedef unsigned int u32;
 
-void uart0_init(int br) {
+void uart0_init(u32 br) {
 
-	PINSEL0&=~((0x03<<0)|(0x03<<2)); 	// clear bits 0-3
-	PINSEL0|=((1<<0)|(1<<2));		// pin select: tx, rx
+	/* pin select -> tx rx */
+	PINSEL0&=~((1<<0)|(1<<1)|(1<<2)|(1<<3));
+	PINSEL0|=((1<<0)|(1<<2));
 
-	UART0_LCR|=(1<<7);			// enable access to divisor
-	UART0_DLL=(P_CLOCK/(br*16))&0xff;	// set divisor
-	UART0_DLL=((P_CLOCK/(br*16))&0xff00)>>8;
-	UART0_LCR&=~(1<<7);			// disable access to divisor
+	/* divisor */
+	UART0_LCR|=(1<<7);
+	//UART0_DLL=((OSC_CLOCK/(16*br)))&0xff;
+	//UART0_DLM=(((OSC_CLOCK/(16*br)))&0xff00)>>8;
+	UART0_DLL=65;
+	UART0_DLM=0;
 
-	UART0_LCR&=~(0x03<<2);			// 1 stop bit, no parity
-	UART0_LCR|=0x03;			// 8 data bits
+	/* 8 bit data */
+	UART0_LCR=((1<<0)|(1<<1));
 
-	UART0_FCR=0x01;				// activate fifo
+	/* activate rx tx fifo */
+	UART0_FCR|=((1<<0)|(1<<1)|(1<<2));
 }
 
 void uart_send(u8 byte) {