--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flash.c	Sat Feb 04 13:29:31 2012 +1030
@@ -0,0 +1,57 @@
+#include <stdint.h>
+
+#include "stm32f10x.h"
+#include "spi.h"
+#include "flash.h"
+
+#define FL_SELECT()	GPIO_ResetBits(GPIOA, GPIO_Pin_4)
+#define FL_DESELECT()	GPIO_SetBits(GPIOA, GPIO_Pin_4)
+
+uint16_t
+flashreadid(void) {
+    uint8_t	fac, dev;
+    
+    FL_SELECT();			/* Select device */
+
+    SPI_WriteByte(FL_RDID);		/* Send command */
+    SPI_WriteByte(0x00);		/* Send address cycles (ID data starts at 0) */
+    SPI_WriteByte(0x00);
+    SPI_WriteByte(0x00);
+    fac = SPI_WriteByte(0x00);		/* Read ID */
+    dev = SPI_WriteByte(0x00);
+  
+    FL_DESELECT();			/* De-select device */
+
+    return fac << 8 | dev;
+}
+
+uint8_t
+flashreadstatus(void) {
+    uint8_t	status;
+    
+    FL_SELECT();			/* Select device */
+
+    SPI_WriteByte(FL_RDSR);		/* Send command */
+    SPI_WriteByte(0x00);		/* Send dummy byte for address cycle */
+    status = SPI_WriteByte(0x00);	/* Read status */
+  
+    FL_DESELECT();			/* De-select device */
+
+    return status;
+}
+
+void
+flashwritestatus(uint8_t status) {
+    /* Enable status write */
+    FL_SELECT();			/* Select device */
+    SPI_WriteByte(FL_EWSR);		/* Send command */
+    SPI_WriteByte(0x00);		/* Send data byte */
+    FL_DESELECT();
+
+    /* Actually write status */
+    FL_SELECT();			/* Re-select device for new command */			
+    SPI_WriteByte(FL_WRSR);		/* Send command */
+    SPI_WriteByte(status);		/* Send data byte */
+    FL_DESELECT();			/* De-select device */
+}
+