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MMA7660: changed mraa i2c read call

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The mraa_i2c_read_bytes_call didn't work with firmata based
platforms and was changed to mraa_i2c_read_bytes_data call which
worked.

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>
This commit is contained in:
Abhishek Malik 2017-08-28 16:40:08 -07:00
parent aa047d6b5c
commit f37236fa01
1 changed files with 6 additions and 5 deletions
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11
src/mma7660/mma7660.c
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@ -99,13 +99,14 @@ upm_result_t mma7660_write_byte(const mma7660_context dev,
upm_result_t mma7660_read_byte(const mma7660_context dev, uint8_t reg, upm_result_t mma7660_read_byte(const mma7660_context dev, uint8_t reg,
uint8_t *byte) uint8_t *byte)
{ {
uint8_t data[11];
assert(dev != NULL); assert(dev != NULL);
int x = mraa_i2c_read_byte_data(dev->i2c, reg); int ret = mraa_i2c_read_bytes_data(dev->i2c, 0x00, data, 11);
if (x < 0) if (ret != 11) {
{ printf("%s: mraa_i2c_read_bytes_data() failed.\n", __FUNCTION__);
printf("%s: mraa_i2c_read_byte_data() failed.\n", __FUNCTION__); printf("returned %d bytes upon read\n", ret);
if (byte) if (byte)
*byte = 0; *byte = 0;
@ -113,7 +114,7 @@ upm_result_t mma7660_read_byte(const mma7660_context dev, uint8_t reg,
} }
if (byte) if (byte)
*byte = (uint8_t)(x & 0xff); *byte = (uint8_t)(data[reg] & 0xff);
return UPM_SUCCESS; return UPM_SUCCESS;
} }