void init_8x8()
{
#ifdef USE_HW_VERSION
DISP8x8_DDR &= ~MISO; // MISO as input
#endif
DISP8x8_DDR |= DISP8x8_CS + DISP8x8_DIN + DISP8x8_CLK; // SS, MOSI, SCK pin as output
DISP8x8_PORT = DISP8x8_CS + MISO + DISP8x8_CLK;
wait(1);
// SPI mode 0: leading edge = sample rising, trailing edge = setup falling
// no interrupt, SPI enable, MSB first, master, mode 00, prescaler 16 (1 usec delay)
SPSR = 0;
#ifdef USE_HW_VERSION
SPCR = 0b01010001;
#else
SPCR = 0;
#endif
set_8x8_intensity(0x4);
// scan limit 7
send_spi_data(0x0b, 0x07);
// decode mode 0 = led matrix (no digit decoding)
send_spi_data(0x09, 0x0);
// not shutdown mode
send_spi_data(0x0c, 0x1);
// not display test
send_spi_data(0x0f, 0x0);
}
static status_t peripheral_write(uint8_t *src, uint32_t writeLength)
{
status_t status = kStatus_Success;
switch (g_buspalState)
{
case kBuspal_I2c:
status = send_i2c_data(src, writeLength);
break;
case kBuspal_Spi:
send_spi_data(src, writeLength);
break;
case kBuspal_FlexCAN:
send_can_data(src, writeLength);
break;
default:
status = kStatus_Fail;
break;
}
return status;
}
void set_8x8_intensity(uint8_t intensity)
{
send_spi_data(0x0a, intensity);
}
void set_8x8_segment(uint8_t segm, uint8_t data)
{
send_spi_data(segm, data);
}
