From: hackbard <hackbard@staubsauger.localdomain>
Date: Wed, 8 Aug 2007 16:31:58 +0000 (+0200)
Subject: fwbc transmitting 0x23 now, though it's still curious. Makefile updates.
X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=commitdiff_plain;h=ba94d4dc80e71b41a6458e028dd45673782bc5f5

fwbc transmitting 0x23 now, though it's still curious. Makefile updates.
---

diff --git a/betty/Makefile b/betty/Makefile
index 1155b45..a1e44da 100644
--- a/betty/Makefile
+++ b/betty/Makefile
@@ -3,10 +3,17 @@ CFLAGS = -Wall
 
 ARMCC = /scratch/arm-elf/bin/arm-elf-gcc
 ARMCFLAGS = -Wall -mcpu=arm7tdmi-s 
-
 ARMOBJCOPY = /scratch/arm-elf/bin/arm-elf-objcopy
 
-all: lpcload fwbc.hex
+HOSTOBJECTS = lpcload
+
+ARMOBJECTS = fwbc.hex
+
+# all projects
+all: $(HOSTOBJECTS) $(ARMOBJECTS)
+
+# arm code
+arm: arm_clean $(ARMOBJECTS)
 
 # fwbc
 fwbc:
@@ -17,3 +24,6 @@ fwbc.hex: fwbc
 
 clean:
 	rm -f lpcload fwbc.hex fwbc
+
+arm_clean:
+	rm -f fwbc.hex fwbc
diff --git a/betty/fwbc.c b/betty/fwbc.c
index a625716..9682ee8 100644
--- a/betty/fwbc.c
+++ b/betty/fwbc.c
@@ -6,48 +6,97 @@
  *
  */
 
+/*
+ * include files
+ */
+
 #include "lpc2xxx.h"
 
+/*
+ * defines
+ */
+
+/* misc */
 #define OSC_CLOCK		10000000
 #define BAUDRATE		9600
 #define P_DIV			4
 #define P_CLOCK			(OSC_CLOCK/P_DIV)
 
+/* memory mapping */
+#define	MMAP_BL			0x00
+#define MMAP_RAM		0x02
+#define MMAP_EXT		0x03
+
+/*
+ * type definitions
+ */
+
 typedef unsigned char u8;
 typedef unsigned int u32;
 
+/*
+ * function prototypes
+ */
 
-/* memory mapping */
+void mmap_init(u8 memtype);
+void uart0_init(void);
+void uart0_send_string(char *txbuf);
+void uart0_send_char(char send);
 
-#define	MMAP_BL		0x00
-#define MMAP_RAM	0x02
-#define MMAP_EXT	0x03
+/*
+ * main function
+ */
 
-void mmap_init(u8 memtype) {
+int main(void) {
 
-	MEMMAP=memtype;
+	/* memory mapping of interrupt vectors to static ram */
+
+	//mmap_init(MMAP_RAM);
+
+	/* uart initialization */
+
+#ifdef USE_FUNCTIONS
+	//uart0_init();
+#else
+	PINSEL0=0x05;			// pin select -> tx, rx
+	UART0_FCR=0x07;			// enable fifo
+	UART0_LCR=0x83;			// set dlab + word length
+	UART0_DLL=0x10;			// br: 9600 @ 10/4 mhz
+	UART0_DLM=0x00;
+	UART0_LCR=0x03;			// unset dlab
+#endif
+
+	/* external memory init */
+
+	while(1) {
+		while(!(UART0_LSR&(1<<5)))
+			continue;
+		UART0_THR=0x23;
+	}
+
+	return 0;
 }
 
-void uart0_init(void) {
+/*
+ * functions
+ */
 
-	/* pin select -> tx rx */
-	PINSEL0=0x05;
+void mmap_init(u8 memtype) {
 
-	/* enable fifo */
-	UART0_FCR=0x07;
+	MEMMAP=memtype;
+}
 
-	/* set dlab + word length */
-	UART0_LCR=0x83;
+void uart0_init(void) {
 
-	/* set baud rate to 9600 @ 10/4 mhz */
-	UART0_DLL=0x10;
+	PINSEL0=0x05;			// pin select -> tx, rx
+	UART0_FCR=0x07;			// enable fifo
+	UART0_LCR=0x83;			// set dlab + word length
+	UART0_DLL=0x10;			// br: 9600 @ 10/4 mhz
 	UART0_DLM=0x00;
-
-	/* unset dlab */
-	UART0_LCR=0x03;
+	UART0_LCR=0x03;			// unset dlab
 }
 
-void uart_send(char *txbuf) {
+void uart0_send_string(char *txbuf) {
 
 	int i;
 
@@ -61,20 +110,11 @@ void uart_send(char *txbuf) {
 	while(!(UART0_LSR&(1<<6))) {}
 }
 
-int main(void) {
-
-	char txbuf[]="uart0 working";
+void uart0_send_char(char send) {
 
-	/* memory mapping of interrupt vectors to static ram */
-	mmap_init(MMAP_RAM);
+	while(!(UART0_LSR&(1<<5)))
+		continue;
 
-	/* initialization */
-	uart0_init();
-
-	while(1) {
-		uart_send(txbuf);
-	}
-
-	return 0;
+	UART0_THR=send;
 }