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-rw-r--r--src/drivers/px4io/interface_serial.cpp13
-rw-r--r--src/modules/px4iofirmware/serial.c7
2 files changed, 19 insertions, 1 deletions
diff --git a/src/drivers/px4io/interface_serial.cpp b/src/drivers/px4io/interface_serial.cpp
index e688d672c..814f66ea4 100644
--- a/src/drivers/px4io/interface_serial.cpp
+++ b/src/drivers/px4io/interface_serial.cpp
@@ -181,6 +181,7 @@ private:
perf_counter_t _perf_timeouts;
perf_counter_t _perf_errors;
perf_counter_t _perf_txns;
+ perf_counter_t _perf_crcerrs;
};
@@ -201,7 +202,8 @@ PX4IO_serial::PX4IO_serial() :
_perf_dmasetup(perf_alloc(PC_ELAPSED, "dmasetup")),
_perf_timeouts(perf_alloc(PC_COUNT, "timeouts")),
_perf_errors(perf_alloc(PC_COUNT, "errors ")),
- _perf_txns(perf_alloc(PC_ELAPSED, "txns "))
+ _perf_txns(perf_alloc(PC_ELAPSED, "txns ")),
+ _perf_crcerrs(perf_alloc(PC_COUNT, "crcerrs "))
{
/* allocate DMA */
_tx_dma = stm32_dmachannel(PX4IO_SERIAL_TX_DMAMAP);
@@ -319,6 +321,7 @@ PX4IO_serial::test(unsigned mode)
perf_print_counter(_perf_txns);
perf_print_counter(_perf_timeouts);
perf_print_counter(_perf_errors);
+ perf_print_counter(_perf_crcerrs);
count = 0;
}
usleep(10000);
@@ -460,11 +463,19 @@ PX4IO_serial::_wait_complete(bool expect_reply, unsigned tx_length)
if (_tx_dma_status & DMA_STATUS_TEIF) {
lowsyslog("DMA transmit error\n");
ret = -1;
+ break;
}
if (_rx_dma_status & DMA_STATUS_TEIF) {
lowsyslog("DMA receive error\n");
ret = -1;
+ break;
}
+
+ /* check packet CRC */
+ uint8_t crc = _dma_buffer.crc;
+ _dma_buffer.crc = 0;
+ if (crc != crc_packet(_dma_buffer))
+ perf_count(_perf_crcerrs);
break;
}
diff --git a/src/modules/px4iofirmware/serial.c b/src/modules/px4iofirmware/serial.c
index 722d05809..6c6a9a2b1 100644
--- a/src/modules/px4iofirmware/serial.c
+++ b/src/modules/px4iofirmware/serial.c
@@ -64,6 +64,7 @@ static perf_counter_t pc_ore;
static perf_counter_t pc_fe;
static perf_counter_t pc_ne;
static perf_counter_t pc_regerr;
+static perf_counter_t pc_crcerr;
static void rx_dma_callback(DMA_HANDLE handle, uint8_t status, void *arg);
static void tx_dma_callback(DMA_HANDLE handle, uint8_t status, void *arg);
@@ -124,6 +125,7 @@ interface_init(void)
pc_fe = perf_alloc(PC_COUNT, "framing");
pc_ne = perf_alloc(PC_COUNT, "noise");
pc_regerr = perf_alloc(PC_COUNT, "regerr");
+ pc_crcerr = perf_alloc(PC_COUNT, "crcerr");
/* allocate DMA */
tx_dma = stm32_dmachannel(PX4FMU_SERIAL_TX_DMA);
@@ -205,6 +207,11 @@ rx_dma_callback(DMA_HANDLE handle, uint8_t status, void *arg)
perf_count(pc_rx);
+ uint8_t crc = dma_packet.crc;
+ dma_packet.crc = 0;
+ if (crc != crc_packet())
+ perf_count(pc_crcerr);
+
/* default to not sending a reply */
if (PKT_CODE(dma_packet) == PKT_CODE_WRITE) {