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Tinkering.

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px4dev
2013-01-23 18:57:16 -08:00
parent b34311915a
commit d8a013f872
1 changed files with 4 additions and 3 deletions
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apps/systemcmds/i2c/i2c.c
+4 -3
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@@ -80,12 +80,13 @@ int i2c_main(int argc, char *argv[])
usleep(100000);
uint32_t val = 0x12345678;
int ret = transfer(PX4_I2C_OBDEV_PX4IO, (uint8_t *)&val, sizeof(val), NULL, 0);
uint8_t buf[] = { 0, 4};
int ret = transfer(PX4_I2C_OBDEV_PX4IO, buf, sizeof(buf), NULL, 0);
if (ret)
errx(1, "send failed - %d", ret);
uint32_t val;
ret = transfer(PX4_I2C_OBDEV_PX4IO, NULL, 0, (uint8_t *)&val, sizeof(val));
if (ret)
errx(1, "recive failed - %d", ret);
@@ -128,7 +129,7 @@ transfer(uint8_t address, uint8_t *send, unsigned send_len, uint8_t *recv, unsig
* if there are any devices on the bus with a different frequency
* preference. Really, this is pointless.
*/
I2C_SETFREQUENCY(i2c, 320000);
I2C_SETFREQUENCY(i2c, 400000);
ret = I2C_TRANSFER(i2c, &msgv[0], msgs);
// reset the I2C bus to unwedge on error