#include "nrf.h"
#include "spi.h"
+//Weird HOPE badge wiring. This was a fuckup.
+//BIT0 should be SS, but in point of fact it is IRQ.
+//BIT4 is actually SS, BIT5 is CE.
+#define SS BIT4
+
//This could be more accurate.
//Does it ever need to be?
#define NRFSPEED 0
//! Set up the pins for NRF mode.
void nrfsetup(){
P5OUT|=SS;
- P5DIR|=MOSI+SCK+SS;
P5DIR&=~MISO;
+ P5DIR|=MOSI+SCK+SS;
+
//Begin a new transaction.
P5OUT&=~SS;
P5OUT|=SS;
}
-
//! Read and write an NRF byte.
-unsigned char nrftrans8(unsigned char byte){
+u8 nrftrans8(u8 byte){
register unsigned int bit;
//This function came from the NRF Wikipedia article.
//Minor alterations.
}
+//! Writes a register
+u8 nrf_regwrite(u8 reg, const u8 *buf, int len){
+ P5OUT&=~SS;
+
+ reg=nrftrans8(reg);
+ while(len--)
+ nrftrans8(*buf++);
+
+ P5OUT|=SS;
+}
+//! Reads a register
+u8 nrf_regread(u8 reg, u8 *buf, int len){
+ P5OUT&=~SS;
+
+ reg=nrftrans8(reg);
+ while(len--)
+ *buf++=nrftrans8(0);
+
+ P5OUT|=SS;
+}
+
//! Handles a Nordic RF command.
void nrfhandle(unsigned char app,
unsigned char verb,
//Raise !SS to end transaction, just in case we forgot.
P5OUT|=SS;
nrfsetup();
-
- debugstr("NRF Handler");
-
+
switch(verb){
//PEEK and POKE might come later.
- case READ:
+ case READ:
case WRITE:
P5OUT&=~SS; //Drop !SS to begin transaction.
for(i=0;i<len;i++)
case PEEK://Grab NRF Register
P5OUT&=~SS; //Drop !SS to begin transaction.
- nrftrans8(0|(0x1F & cmddata[0])); //000A AAAA
+ nrftrans8(NRF_R_REGISTER | cmddata[0]); //000A AAAA
for(i=1;i<len;i++)
cmddata[i]=nrftrans8(cmddata[i]);
P5OUT|=SS; //Raise !SS to end transaction.
- txdata(app,verb,0);
+ txdata(app,verb,len);
break;
case POKE://Poke NRF Register
-
- txdata(app,verb,0);
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ nrftrans8(NRF_W_REGISTER | cmddata[0]); //001A AAAA
+ for(i=1;i<len;i++)
+ cmddata[i]=nrftrans8(cmddata[i]);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ txdata(app,verb,len);
break;
case SETUP: