diff options
Diffstat (limited to 'src/usbtrng-v2.0/ao_usbtrng.c')
| -rw-r--r-- | src/usbtrng-v2.0/ao_usbtrng.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/usbtrng-v2.0/ao_usbtrng.c b/src/usbtrng-v2.0/ao_usbtrng.c index 26cfbac9..e1f43cdd 100644 --- a/src/usbtrng-v2.0/ao_usbtrng.c +++ b/src/usbtrng-v2.0/ao_usbtrng.c @@ -23,7 +23,6 @@ static void ao_trng_fetch(void) { static uint16_t *buffer[2]; - static uint32_t adc_in[AO_USB_IN_SIZE/2]; /* twice as many as we need */ uint32_t kbytes = 1; uint32_t count; int usb_buf_id; @@ -50,18 +49,21 @@ ao_trng_fetch(void) ao_led_on(AO_LED_GREEN); while (count--) { - ao_adc_read((uint16_t *) adc_in, AO_USB_IN_SIZE); - rnd = adc_in; buf = buffer[usb_buf_id]; +// printf ("before get: head %3d tail %3d running %d\n", ao_adc_ring_head, ao_adc_ring_tail, ao_adc_running); flush(); + rnd = (uint32_t *) ao_adc_get(AO_USB_IN_SIZE); /* one 16-bit value per output byte */ +// printf ("after get: head %3d tail %3d running %d\n", ao_adc_ring_head, ao_adc_ring_tail, ao_adc_running); flush(); for (i = 0; i < 32; i++) *buf++ = ao_crc_in_32_out_16(*rnd++); + ao_adc_ack(AO_USB_IN_SIZE); +// printf ("after ack: head %3d tail %3d running %d\n", ao_adc_ring_head, ao_adc_ring_tail, ao_adc_running); flush(); ao_led_toggle(AO_LED_GREEN|AO_LED_RED); ao_usb_write(buffer[usb_buf_id], AO_USB_IN_SIZE); ao_led_toggle(AO_LED_GREEN|AO_LED_RED); usb_buf_id = 1-usb_buf_id; } ao_led_off(AO_LED_GREEN|AO_LED_RED); - ao_usb_flush(); + flush(); } static const struct ao_cmds usbtrng_cmds[] = { |