static cyg_uint8
eeprom_getb(int more)
{
int i;
cyg_uint8 b = 0;
HAL_GPIO_OUTPUT_DISABLE(GPIO_EEPROM_SDA);
hal_delay_us(5);
for (i = 7; i >= 0; i--) {
b <<= 1;
if (*IXP425_GPINR & (1 << GPIO_EEPROM_SDA))
b |= 1;
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
}
HAL_GPIO_OUTPUT_ENABLE(GPIO_EEPROM_SDA);
if (more)
DATA_LO();
else
DATA_HI();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
return b;
}
static int
eeprom_putb(cyg_uint8 b)
{
int i;
for (i = 7; i >= 0; i--) {
if (b & (1 << i))
DATA_HI();
else
DATA_LO();
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
}
HAL_GPIO_OUTPUT_DISABLE(GPIO_EEPROM_SDA);
CLK_HI();
hal_delay_us(5);
i = (*IXP425_GPINR & (1 << GPIO_EEPROM_SDA)) ? 0 : 1;
CLK_LO();
hal_delay_us(5);
DATA_HI();
HAL_GPIO_OUTPUT_ENABLE(GPIO_EEPROM_SDA);
return i;
}
void write_pixel(int bit)
{
for(int i = 0; i < 4; i++) {
if (bit)
MOSI_HI();
else
MOSI_LO();
CLK_LO();
__no_operation();
CLK_HI();
}
}
static void
eeprom_stop(void)
{
int i;
hal_delay_us(5);
DATA_LO();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
DATA_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
}
void AspiData(u8 Para_data)
{
int i=8;
CLK_HI();
A0_HI();
NCS_LO();
while (i--) {
CLK_LO();
if (Para_data&0x80)
MOSI_HI();
else
MOSI_LO();
Para_data <<= 1;
__no_operation();
CLK_HI();
__no_operation();
}
NCS_HI();
A0_HI();
}
/* These are ported from th eopentx driver */
void AspiCmd(u8 Command_Byte)
{
int i=8;
A0_LO();
CLK_HI();
__no_operation();
NCS_LO();
while (i--) {
CLK_LO();
if (Command_Byte&0x80)
MOSI_HI();
else
MOSI_LO();
Command_Byte <<= 1;
CLK_HI();
__no_operation();
}
NCS_HI();
A0_HI();
}
