numerous updates

Makefile

@@ -1,8 +1,9 @@
 all:	nrfprog
 CFLAGS=-ggdb -Wall
+DEBUG := $(if $(DEBUG),-DDEBUG_PRINT)
 
 nrfprog: nrfprog.c bp.h nrf24le1.h
-	gcc ${CFLAGS} -o nrfprog nrfprog.c
+	gcc ${CFLAGS} -o nrfprog nrfprog.c $(DEBUG)
 
 clean:
 	rm -f nrfprog

README.md

@@ -0,0 +1,41 @@
+# BusPirate NRF24LE1/NRF24LU1+ programmer
+This is a simple programmer for the nRF24LE1 (or nRF24LU1p) using the Bus Pirate as the SPI
+device.
+
+## building
+```
+make clean
+make
+```
+
+### debugging
+for debug build, use:
+```
+make clean
+DEBUG=1 make
+```
+
+## usage
+`nrfprog BUSPIRATE_PORT [filename]`
+
+Running the program directly (./nrfprog) will dump the InfoPage. Put this some 
+where safe, as this contains information unique to your nRF24LE1. Running the
+program, but passing a existing .hex file as a parameter will make the programmer write
+the .hex file to the device. If you pass in filename of non-existing file, nrfprog will attempt to read from chip into the file.
+
+## hardware
+
+| bus pirate   | nrf 24 pin | nrf 32 pin | nrf 48 pin |
+|--------------|------------|------------|------------|
+| GND (brown)  | GND        | GND        | GND        |
+| 3V3 (red)    | PROG       | PROG       | PROG       |
+| AUX (blue)   | RESET      | RESET      | RESET      |
+| CS (white)   | P0.5       | P1.1       | P2.0       |
+| MISO (black) | P0.4       | P1.0       | P1.6       |
+| MOSI (grey)  | P0.3       | P0.7       | P1.5       |
+| CLK (purple) | P0.2       | P0.5       | P1.2       |
+
+## references
+ * bus pirate binary modes: http://dangerousprototypes.com/docs/SPI_%28binary%29
+ * nrf24le1 datasheet: https://www.nordicsemi.com/kor/nordic/content_download/2443/29442/file/nRF24LE1_Product_Specification_rev1_6.pdf
+

bp.h

@@ -35,6 +35,7 @@
 		#define BP_SPI_CFG_CKE		0x02
 		#define BP_SPI_CFG_SMP		0x01
 	#define BP_SPI_WR_RD 		0x04
+	#define BP_SPI_WR_RD_NO_CS 		0x05
 
 #define BP_I2C		0x02
 #define BP_UART		0x03

nrf24le1.h

@@ -2,9 +2,9 @@
 #define __NRF24LE1_H_
 
 
-#define NRF24_BLOCK_SZ		(512)
-#define NRF24_FLASH_SZ		(32*NRF24_BLOCK_SZ)
-#define NRF24_INFO_SZ		(256)
+#define NRF24_PAGE_SZ		(512)
+#define NRF24_FLASH_SZ		(32*NRF24_PAGE_SZ)
+#define NRF24_INFO_SZ		(512)
 
 #define NRF24_SPI_WRSR		(0x01)
 #define NRF24_SPI_PROGRAM	(0x02)