/**
* Write synthesized data[] to FPGA buffer.
*
* @param ch Channel number [0, 1].
* @param data AWG data to write to FPGA.
* @param awg AWG paramters to write to FPGA.
*/
void write_data_fpga(uint32_t ch,
const int32_t *data,
const awg_param_t *awg) {
uint32_t i;
fpga_awg_init();
if(ch == 0) {
/* Channel A */
g_awg_reg->state_machine_conf = 0x000041;
g_awg_reg->cha_scale_off = awg->offsgain;
g_awg_reg->cha_count_wrap = awg->wrap;
g_awg_reg->cha_count_step = awg->step;
g_awg_reg->cha_start_off = 0;
for(i = 0; i < n; i++) {
g_awg_cha_mem[i] = data[i];
}
} else {
/* Channel B */
g_awg_reg->state_machine_conf = 0x410000;
g_awg_reg->chb_scale_off = awg->offsgain;
g_awg_reg->chb_count_wrap = awg->wrap;
g_awg_reg->chb_count_step = awg->step;
g_awg_reg->chb_start_off = 0;
for(i = 0; i < n; i++) {
g_awg_chb_mem[i] = data[i];
}
}
/* Enable both channels */
/* TODO: Should this only happen for the specified channel?
* Otherwise, the not-to-be-affected channel is restarted as well
* causing unwanted disturbances on that channel.
*/
g_awg_reg->state_machine_conf = 0x110011;
fpga_awg_exit();
}
/** @brief Cleanup Arbitrary Signal Generator module
*
* A function is intended to be called on application's termination. The main purpose
* of this function is to release allocated resources...
*
* @retval 0 success, never fails.
*/
int generate_exit(void)
{
fpga_awg_exit();
return 0;
}
