ESP8266 HSPI

user_main.c

void ICACHE_FLASH_ATTR
spi_mast_2bytes_write(uint8 spi_no,uint16 data)
{
  uint32 regvalue;

  if(spi_no>1) 		return; //handle invalid input number

  while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
  CLEAR_PERI_REG_MASK(SPI_USER(spi_no), SPI_USR_MOSI|SPI_USR_MISO);

  //SPI_FLASH_USER2 bit28-31 is cmd length,cmd bit length is value(0-15)+1,
  // bit15-0 is cmd value.
  WRITE_PERI_REG(SPI_USER2(spi_no),
  ((SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint16)data));
  SET_PERI_REG_MASK(SPI_CMD(spi_no), SPI_USR);
  while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
}

void manage_STP16_leds(int mask) {

  os_printf("Pre SPI\n");
  gpio_output_set(0, BIT15, BIT15, 0);
  hspi_dev_sel(HSPI_CS_DEV);

  spi_mast_2bytes_write(HSPI, mask);

  gpio_output_set(BIT15, 0, BIT15, 0);
  os_delay_us(10);
  gpio_output_set(0, BIT15, BIT15, 0);

  os_printf("Post SPI\n");

}

void user_init(void)
{

  // system_update_cpu_freq(160);

  uart_div_modify(0, UART_CLK_FREQ / 115200);

  os_printf("SDK version:%s\n", system_get_sdk_version());

  gpio_output_set(0, 0, BIT13, 0);
  gpio_output_set(0, 0, BIT14, 0);
  gpio_output_set(0, 0, BIT15, 0);

  hspi_master_dev_init(HSPI_CS_DEV, 0, 9);
  SET_PERI_REG_MASK(SPI_USER(HSPI), SPI_WR_BYTE_ORDER));
  
  ....
  
}