static void handler (void)
{
// Disable interrupt temp
extint_disable (extint1);
irq_clear (AT91C_ID_IRQ1);
uint8_t addr;
uint8_t buffer[2];
i2c_ret_t ret;
DELAY_US (4);
//pio_output_toggle (LED1_PIO);
ret = i2c_slave_read (i2c_slave1, buffer, sizeof (buffer), 10000);
addr = buffer[0] - ARRAY_OFFSET;
if (addr >= sizeof (comms_data))
addr = 0;
if (ret == 1)
{
// Have not received photo line command.
if (buffer[0] != CD_PHOTO_LINE)
ret = i2c_slave_write (i2c_slave1, comms_data[addr], 130, 1000); // Return data requested.
else
{
// check if photo ready.
if (comms_data[CD_PHOTO_READY-ARRAY_OFFSET])
{
ret = i2c_slave_write (i2c_slave1, comms_data[CD_PHOTO_NEXT_LINE-ARRAY_OFFSET], 130, 1000);
if (ret > 0)
{
ret++;
*comms_data[CD_FAULT - ARRAY_OFFSET] = ret;
comms_data[CD_PHOTO_NEXT_LINE-ARRAY_OFFSET] += ret;
if ((comms_data[CD_PHOTO_NEXT_LINE-ARRAY_OFFSET] - image) == image_size)
{
// We have sent the entire picture
comms_data[CD_PHOTO_NEXT_LINE-ARRAY_OFFSET] = image;
comms_data[CD_PHOTO_READY-ARRAY_OFFSET] = 0;
}
}
}
}
}
if (ret == 2)
{
if (buffer[0] == COMMS_COMMAND)
next_command = buffer[1];
}
extint_enable (extint1);
}
DDE_WEAK void free_irq(unsigned int irq, void * dev_id) {
irq_clear(irq);
//dde_printf("free_irq not implemented\n");
}
