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Added debug statements

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This commit is contained in:
Michael Brown 2006-12-04 23:20:56 +00:00
parent 052ef6dc5a
commit 6b45947a59
1 changed files with 20 additions and 4 deletions
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24
src/drivers/nvs/spi.c
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@ -85,8 +85,16 @@ int spi_read ( struct nvs_device *nvs, unsigned int address,
struct spi_bus *bus = device->bus;
unsigned int command = spi_command ( SPI_READ, address,
device->munge_address );
int rc;
return bus->rw ( bus, device, command, address, NULL, data, len );
DBG ( "SPI %p reading %d bytes from %#04x\n", device, len, address );
if ( ( rc = bus->rw ( bus, device, command, address,
NULL, data, len ) ) != 0 ) {
DBG ( "SPI %p failed to read data from device\n", device );
return rc;
}
return 0;
}
/**
@ -106,16 +114,24 @@ int spi_write ( struct nvs_device *nvs, unsigned int address,
device->munge_address );
int rc;
DBG ( "SPI %p writing %d bytes to %#04x\n", device, len, address );
if ( ( rc = bus->rw ( bus, device, SPI_WREN, -1,
NULL, NULL, 0 ) ) != 0 )
NULL, NULL, 0 ) ) != 0 ) {
DBG ( "SPI %p failed to write-enable device\n", device );
return rc;
}
if ( ( rc = bus->rw ( bus, device, command, address,
data, NULL, len ) ) != 0 )
data, NULL, len ) ) != 0 ) {
DBG ( "SPI %p failed to write data to device\n", device );
return rc;
}
if ( ( rc = spi_wait ( device ) ) != 0 )
if ( ( rc = spi_wait ( device ) ) != 0 ) {
DBG ( "SPI %p failed to complete write operation\n", device );
return rc;
}
return 0;
}