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Firmata: I2C read bytes data array size mismatch fix

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Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Abhishek Malik
2016-12-19 18:13:56 -08:00
committed by Brendan Le Foll
parent 17b147ba82
commit 3bd590c18c
1 changed files with 8 additions and 1 deletions
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9
src/firmata/firmata_mraa.c
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@@ -231,9 +231,16 @@ mraa_firmata_i2c_read_word_data(mraa_i2c_context dev, uint8_t command)
static int static int
mraa_firmata_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length) mraa_firmata_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length)
{ {
uint32_t *local_storage = (uint32_t*) calloc(length, sizeof(int));
if (mraa_firmata_send_i2c_read_reg_req(dev, command, length) == MRAA_SUCCESS) { if (mraa_firmata_send_i2c_read_reg_req(dev, command, length) == MRAA_SUCCESS) {
if (mraa_firmata_i2c_wait(dev->addr, command) == MRAA_SUCCESS) { if (mraa_firmata_i2c_wait(dev->addr, command) == MRAA_SUCCESS) {
memcpy(data, &firmata_dev->i2cmsg[dev->addr][command], sizeof(int)*length); memcpy(local_storage, &firmata_dev->i2cmsg[dev->addr][command], sizeof(int)*length);
int x = 0;
for(; x<length; x++){
data[x] = (uint8_t) local_storage[x];
}
free(local_storage);
return length; return length;
} }
} }