icE1usb fw: Disable reporting of 'loss of timing' for now
This works half way decent enough to make the LED status change visibly
in case the physical link is disconnected. However, we will generate a
storm of USB interrupt endpoint messages if we leave this on
Change-Id: I9d0ddb2d404880c4a85e30de1b4bf4204d468ab7
diff --git a/firmware/ice40-riscv/icE1usb/e1.c b/firmware/ice40-riscv/icE1usb/e1.c
index 38229f6..a2cd654 100644
--- a/firmware/ice40-riscv/icE1usb/e1.c
+++ b/firmware/ice40-riscv/icE1usb/e1.c
@@ -389,7 +389,9 @@
uint16_t cur_tick = e1_tick_read_rx(0);
if (g_e1.rx.last_tick == cur_tick) {
e1_platform_led_set(0, E1P_LED_GREEN, E1P_LED_ST_OFF);
- g_e1.errors.flags |= E1_ERR_F_LOS;
+ /* FIXME: this is very flaky, we are probably getting some noise
+ * at the Rx tick counter if the cable is disconnected? */
+ //g_e1.errors.flags |= E1_ERR_F_LOS;
} else {
e1_platform_led_set(0, E1P_LED_GREEN, E1P_LED_ST_BLINK);
g_e1.errors.flags &= ~E1_ERR_F_LOS;