mist-devel.mist-firmware/spi.c

#include "spi.h"
#include "hardware.h"

/* generic helper */
void spi8(unsigned char parm) {
  SPI(parm);
}

void spi16(unsigned short parm) {
  SPI(parm >> 8);
  SPI(parm >> 0);
}

void spi24(unsigned long parm) {
  SPI(parm >> 16);
  SPI(parm >> 8);
  SPI(parm >> 0);
}

void spi32(unsigned long parm) {
  SPI(parm >> 24);
  SPI(parm >> 16);
  SPI(parm >> 8);
  SPI(parm >> 0);
}

// little endian: lsb first
void spi32le(unsigned long parm) {
  SPI(parm >> 0);
  SPI(parm >> 8);
  SPI(parm >> 16);
  SPI(parm >> 24);
}

void spi_n(unsigned char value, unsigned short cnt) {
  while(cnt--) 
    SPI(value);
}

/* OSD related SPI functions */
void spi_osd_cmd_cont(unsigned char cmd) {
  EnableOsd();
  SPI(cmd);
}

void spi_osd_cmd(unsigned char cmd) {
  spi_osd_cmd_cont(cmd);
  DisableOsd();
}

void spi_osd_cmd8_cont(unsigned char cmd, unsigned char parm) {
  EnableOsd();
  SPI(cmd);
  SPI(parm);
}

void spi_osd_cmd8(unsigned char cmd, unsigned char parm) {
  spi_osd_cmd8_cont(cmd, parm);
  DisableOsd();
}

void spi_osd_cmd32_cont(unsigned char cmd, unsigned long parm) {
  EnableOsd();
  SPI(cmd);
  spi32(parm);
}

void spi_osd_cmd32(unsigned char cmd, unsigned long parm) {
  spi_osd_cmd32_cont(cmd, parm);
  DisableOsd();
}

void spi_osd_cmd32le_cont(unsigned char cmd, unsigned long parm) {
  EnableOsd();
  SPI(cmd);
  spi32le(parm);
}

void spi_osd_cmd32le(unsigned char cmd, unsigned long parm) {
  spi_osd_cmd32le_cont(cmd, parm);
  DisableOsd();
}