Marko Kiiskila created MYNEWT-529:
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Summary: i2c bus scanner
Key: MYNEWT-529
URL: https://issues.apache.org/jira/browse/MYNEWT-529
Project: Mynewt
Issue Type: New Feature
Components: HAL
Reporter: Marko Kiiskila
Assignee: Marko Kiiskila
Bring in Kevin's i2c bus scanner, probably in form of separate package.
test/i2c_tools maybe?
static int
shell_i2cscan_cmd(int argc, char **argv)
{
uint8_t addr;
int32_t timeout = OS_TICKS_PER_SEC / 10;
uint8_t dev_count = 0;
console_printf("Scanning I2C bus 0\n"
" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n"
"00: ");
/* Scan all valid I2C addresses (0x03..0x77) */
for (addr = 0x08; addr < 0x78; addr++) {
int rc = hal_i2c_master_probe(0, addr, timeout);
/* Print addr header every 16 bytes */
if (!(addr % 16)) {
console_printf("\n%02x: ", addr);
}
/* Display the addr if a response was received */
if (!rc) {
console_printf("%02x ", addr);
dev_count++;
} else {
console_printf("-- ");
}
}
console_printf("\nFound %u devices on I2C bus 0\n", dev_count);
return 0;
}
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