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ftdi_ft4222.c: Implemented previously stubbed out i2c functions.

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Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Henry Bruce
2015-10-08 13:18:06 -07:00
committed by Brendan Le Foll
parent df8492a8f7
commit 799f1409b9
1 changed files with 16 additions and 3 deletions
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15
src/usb/ftdi_ft4222.c
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@@ -293,6 +293,10 @@ mraa_ftdi_ft4222_i2c_read(mraa_i2c_context dev, uint8_t* data, int length)
static uint8_t static uint8_t
mraa_ftdi_ft4222_i2c_read_byte(mraa_i2c_context dev) mraa_ftdi_ft4222_i2c_read_byte(mraa_i2c_context dev)
{ {
uint8_t data;
if (mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, &data, 1) == 1)
return data;
else
return 0; return 0;
} }
@@ -300,13 +304,22 @@ mraa_ftdi_ft4222_i2c_read_byte(mraa_i2c_context dev)
static uint16_t static uint16_t
mraa_ftdi_ft4222_i2c_read_word_data(mraa_i2c_context dev, uint8_t command) mraa_ftdi_ft4222_i2c_read_word_data(mraa_i2c_context dev, uint8_t command)
{ {
uint8_t buf[2];
uint16_t data;
if (mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, &command, 1) != 1)
return 0; return 0;
if (mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, buf, 2) != 2)
return 0;
data = *(uint16_t*)buf;
return data;
} }
static int static int
mraa_ftdi_ft4222_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length) mraa_ftdi_ft4222_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length)
{ {
return -1; if (mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, &command, 1) != 1)
return 0;
return mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, data, length);
} }