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drivers: ieee802154: rf2xx: Fix hang on 0x2c isr_status

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When transceiver is overload on reception a frame can be stored on
the internal buffer without processing a frame start interrupt. The
frame will complete and system will received a interrupt and signal
receiver thread with an isr_status equal to 0x2c.

The current implementation process one flag at time and it may hang
when status is 0x2c. This issue can be reproduced using two nodes
where one perform a regular TX broadcast and tThe other one should
be wait for frames. The receptor should run on debug mode and system
should be started normally. The problem happens when pressing CTRL+C
on the debugger, which will cause system to stop. However, the
transceiver still can receive one last frame. After a few transmission
user can continue application and a isr_status of 0x2c will be visible
if CONFIG_IEEE802154_DRIVER_LOG_DEBUG is enabled.

This fixes the current issue by processing all RF2XX_TRX_END events.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
This commit is contained in:
Gerson Fernando Budke 2023-01-21 19:55:29 +01:00 • committed by Marti Bolivar
commit 97967f0526
1 changed files with 2 additions and 1 deletions
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3
drivers/ieee802154/ieee802154_rf2xx.c
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@ -326,7 +326,8 @@ static void rf2xx_thread_main(void *arg)
rf2xx_iface_sram_read(ctx->dev, 0,
&ctx->rx_phr, 1);
}
} else if (isr_status & (1 << RF2XX_TRX_END)) {
}
if (isr_status & (1 << RF2XX_TRX_END)) {
rf2xx_process_trx_end(ctx->dev);
}
}