template for new nvm-read test

2009-04-14 17:46:35 -04:00 · 2009-04-14 17:46:35 -04:00 · d3fecae255
parent 3c72e35ed0
commit d3fecae255
1 changed files with 103 additions and 0 deletions
--- a/tests/nvm-read.c
+++ b/tests/nvm-read.c
@ -0,0 +1,103 @@
+#define GPIO_FUNC_SEL0  0x80000018 /* GPIO 15 - 0;  2 bit blocks */
+
+#define BASE_UART1      0x80005000
+#define UART1_CON       0x80005000
+#define UART1_STAT      0x80005004
+#define UART1_DATA      0x80005008
+#define UR1CON          0x8000500c
+#define UT1CON          0x80005010
+#define UART1_CTS       0x80005014
+#define UART1_BR        0x80005018
+
+#define GPIO_PAD_DIR0   0x80000000
+#define GPIO_DATA0      0x80000008
+
+#include "embedded_types.h"
+
+#define reg(x) (*(volatile uint32_t *)(x))
+
+#define DELAY 400000
+
+void putc(uint8_t c);
+void puts(uint8_t *s);
+void put_hex(uint8_t x);
+void put_hex16(uint16_t x);
+void put_hex32(uint32_t x);
+
+const uint8_t hex[16]={'0','1','2','3','4','5','6','7',
+		 '8','9','a','b','c','d','e','f'};
+
+
+void dump_regs(uint32_t base, uint32_t len) {
+	volatile uint32_t i;
+    
+	puts("base +0       +4       +8       +c       +10      +14      +18      +1c      \n\r");                                                     
+	for (i = 0; i < len; i ++) {                                                                                                                   
+		if ((i & 7) == 0) {                                                                                                                   
+			put_hex16(4 * i);                                                                                                             
+		}                                                                                                                                     
+		puts(" ");                                                                                                                            
+		put_hex32(reg(base+(4*i)));                                                                                                      
+		if ((i & 7) == 7)                                                                                                                     
+			puts(NL);                                                                                                                     
+	}                                                                                                                                             
+	puts(NL); 
+}
+
+__attribute__ ((section ("startup")))
+void main(void) {
+	uint8_t c;
+
+	*(volatile uint32_t *)GPIO_PAD_DIR0 = 0x00000100;
+	
+	/* Restore UART regs. to default */
+	/* in case there is still bootloader state leftover */
+
+	reg(UART1_CON) = 0x0000c800; /* mask interrupts, 16 bit sample --- helps explain the baud rate */
+
+	/* INC = 767; MOD = 9999 works: 115200 @ 24 MHz 16 bit sample */
+	#define INC 767
+	#define MOD 9999
+	reg(UART1_BR) = INC<<16 | MOD; 
+
+	/* see Section 11.5.1.2 Alternate Modes */
+	/* you must enable the peripheral first BEFORE setting the function in GPIO_FUNC_SEL */
+	/* From the datasheet: "The peripheral function will control operation of the pad IF */
+	/* THE PERIPHERAL IS ENABLED. */
+	reg(UART1_CON) = 0x00000003; /* enable receive and transmit */
+	reg(GPIO_FUNC_SEL0) = ( (0x01 << (14*2)) | (0x01 << (15*2)) ); /* set GPIO15-14 to UART (UART1 TX and RX)*/
+
+	while(1) {		
+	};
+}
+
+void putc(uint8_t c) {
+	while(reg(UT1CON)==31); /* wait for there to be room in the buffer */
+	reg(UART1_DATA) = c;
+}
+	
+void puts(uint8_t *s) {
+	while(s && *s!=0) {
+		putc(*s++);
+	}
+}
+
+void put_hex(uint8_t x)
+{
+        putc(hex[x >> 4]);
+        putc(hex[x & 15]);
+}
+
+void put_hex16(uint16_t x)
+{
+        put_hex((x >> 8) & 0xFF);
+        put_hex((x) & 0xFF);
+}
+
+void put_hex32(uint32_t x)
+{
+        put_hex((x >> 24) & 0xFF);
+        put_hex((x >> 16) & 0xFF);
+        put_hex((x >> 8) & 0xFF);
+        put_hex((x) & 0xFF);
+}