thermocouple/firmware/slavechip/spi_proto.c

#include "spi_proto.h"


uint16_t *spi_proto_globals8[] = {
                                  &foo
                                 };
uint8_t *spi_proto_globals16[] = {
                                  &bar
                                 };
funptr_t spi_proto_funcs[] = {
                             &baz
                             };




uint8_t spi_proto_needswrite(uint8_t opcode) {
  if(opcode == 4 || opcode == 5) return 1;
  return 0;
}

uint16_t spi_proto_handlewrite(uint8_t opcode, uint8_t addr) {
  if(opcode == 4) {
    return (uint16_t) (*spi_proto_globals8[addr]);
  } else if(opcode == 5) {
    return (*spi_proto_globals16[addr]);
  } else {
      return 0xFFFF;
  }

}

void spi_proto_handleread(uint8_t opcode, uint8_t addr, uint16_t data) {
  if(opcode == 2) {
    *spi_proto_globals8[addr] = (uint8_t) data;
  } else if(opcode == 3) {
    *spi_proto_globals16[addr] = data;
  } else if (opcode == 6) {
    funptr_t func = spi_proto_funcs[addr];
    (*func)();
  } else {
    // boom
  }
}