diff options
Diffstat (limited to 'src/drivers/ms5611')
| -rw-r--r-- | src/drivers/ms5611/ms5611_spi.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/drivers/ms5611/ms5611_spi.cpp b/src/drivers/ms5611/ms5611_spi.cpp index e9dff5a8b..bc4074c55 100644 --- a/src/drivers/ms5611/ms5611_spi.cpp +++ b/src/drivers/ms5611/ms5611_spi.cpp @@ -236,9 +236,12 @@ MS5611_SPI::_read_prom() usleep(3000); /* read and convert PROM words */ + bool all_zero = true; for (int i = 0; i < 8; i++) { uint8_t cmd = (ADDR_PROM_SETUP + (i * 2)); _prom.c[i] = _reg16(cmd); + if (_prom.c[i] != 0) + all_zero = false; //debug("prom[%u]=0x%x", (unsigned)i, (unsigned)_prom.c[i]); } @@ -247,6 +250,10 @@ MS5611_SPI::_read_prom() if (ret != OK) { debug("crc failed"); } + if (all_zero) { + debug("prom all zero"); + ret = -EIO; + } return ret; } |