#include "ccspi.h"
#include "spi.h"
+//! Handles a Chipcon SPI command.
+void ccspi_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len);
+
+// define the ccspi app's app_t
+app_t const ccspi_app = {
+
+ /* app number */
+ CCSPI,
+
+ /* handle fn */
+ ccspi_handle_fn,
-#define RADIOACTIVE SETCE
-#define RADIOPASSIVE CLRCE
+ /* name */
+ "CCSPI",
+
+ /* desc */
+ "\tThe CCSPI app adds support for the Chipcon SPI register\n"
+ "\tinterface. Unfortunately, there is very little similarity\n"
+ "\tbetween the CC2420 and the CC2500, to name just two of the\n"
+ "\tmyriad of Chipcon SPI radios. Auto-detection will be a bit\n"
+ "\tdifficult, but more to the point, all high level functionality\n"
+ "\tmust be moved into the client.\n"
+};
//! Set up the pins for CCSPI mode.
void ccspisetup(){
- SETSS;
- P5DIR&=~MISO;
- P5DIR|=MOSI+SCK;
+ SPIDIR&=~MISO;
+ SPIDIR|=MOSI+SCK;
DIRSS;
DIRCE;
+ P4OUT|=BIT5; //activate CC2420 voltage regulator
+ P4OUT|=BIT6; //bring CC2420 out of reset
+
//Begin a new transaction.
CLRSS;
SETSS;
}
//! Handles a Chipcon SPI command.
-void ccspihandle(unsigned char app,
- unsigned char verb,
- unsigned long len){
+void ccspi_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len){
unsigned long i;
- //Drop CE to passify radio.
- RADIOPASSIVE;
- //Raise !SS to end transaction, just in case we forgot.
- SETSS;
- ccspisetup();
+ //debugstr("Chipcon SPI handler.");
switch(verb){
- //PEEK and POKE might come later.
- case READ:
+ case READ:
case WRITE:
CLRSS; //Drop !SS to begin transaction.
for(i=0;i<len;i++)
case PEEK://Grab CCSPI Register
CLRSS; //Drop !SS to begin transaction.
- ccspitrans8(CCSPI_R_REGISTER | cmddata[0]); //000A AAAA
+ cmddata[0]=ccspitrans8(/*CCSPI_R_REGISTER |*/ cmddata[0]); //000A AAAA
for(i=1;i<len;i++)
cmddata[i]=ccspitrans8(cmddata[i]);
SETSS; //Raise !SS to end transaction.
case POKE://Poke CCSPI Register
CLRSS; //Drop !SS to begin transaction.
- ccspitrans8(CCSPI_W_REGISTER | cmddata[0]); //001A AAAA
+ cmddata[0]=ccspitrans8(/* CCSPI_W_REGISTER |*/ 0x40 | cmddata[0]); //02AA AAAA
for(i=1;i<len;i++)
cmddata[i]=ccspitrans8(cmddata[i]);
SETSS; //Raise !SS to end transaction.
txdata(app,verb,0);
break;
case CCSPI_RX:
- RADIOPASSIVE;
//Get the packet.
CLRSS;
ccspitrans8(CCSPI_RXFIFO);
}
- SETSS;//End session
- RADIOACTIVE;
}