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Disable USB interrupts during sweep set_freq call

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Previously, a USB vendor request could interrupt in the middle of
set_freq and make conflicting changes, leaving the HackRF in an
undefined state.

fixes #772
This commit is contained in:
Mike Walters
2021-03-16 16:18:59 +00:00
parent f2021608a6
commit 1cb2abf747
1 changed files with 5 additions and 0 deletions
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5
firmware/hackrf_usb/usb_api_sweep.c
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@ -29,6 +29,8 @@
#include "usb_endpoint.h"
#include "streaming.h"
#include <libopencm3/lpc43xx/m4/nvic.h>
#define MIN(x,y) ((x)<(y)?(x):(y))
#define MAX(x,y) ((x)>(y)?(x):(y))
#define FREQ_GRANULARITY 1000000
@ -155,7 +157,10 @@ void sweep_mode(void) {
sweep_freq += step_width;
}
}
nvic_disable_irq(NVIC_USB0_IRQ);
set_freq(sweep_freq + offset);
nvic_enable_irq(NVIC_USB0_IRQ);
blocks_queued = 0;
}
}