You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.0 KiB
80 lines
2.0 KiB
/* |
|
* Logging of I2C messages |
|
* |
|
* Copyright 2020 Google LLC |
|
* |
|
* SPDX-License-Identifier: Apache-2.0 |
|
*/ |
|
|
|
#include <stdio.h> |
|
|
|
#include <zephyr/drivers/i2c.h> |
|
|
|
#define LOG_LEVEL CONFIG_I2C_LOG_LEVEL |
|
#include <zephyr/logging/log.h> |
|
LOG_MODULE_REGISTER(i2c); |
|
|
|
#if defined(CONFIG_I2C_CALLBACK) && defined(CONFIG_POLL) |
|
void z_i2c_transfer_signal_cb(const struct device *dev, |
|
int result, |
|
void *data) |
|
{ |
|
struct k_poll_signal *sig = (struct k_poll_signal *)data; |
|
|
|
k_poll_signal_raise(sig, result); |
|
} |
|
#endif |
|
|
|
#ifdef CONFIG_I2C_DUMP_MESSAGES_ALLOWLIST |
|
#define DEF_BUS_WITH_ADDR(node, prop, idx) I2C_DT_SPEC_GET(DT_PHANDLE_BY_IDX(node, prop, idx)), |
|
#define DEF_ALLOWLIST_DEV(node) DT_FOREACH_PROP_ELEM(node, devices, DEF_BUS_WITH_ADDR) |
|
|
|
struct i2c_dt_spec messages_allowlist[] = { |
|
DT_FOREACH_STATUS_OKAY(zephyr_i2c_dump_allowlist, DEF_ALLOWLIST_DEV)}; |
|
|
|
#undef DEF_ALLOWLIST_DEV |
|
#undef DEF_BUS_WITH_ADDR |
|
#endif |
|
|
|
void i2c_dump_msgs_rw(const struct device *dev, const struct i2c_msg *msgs, uint8_t num_msgs, |
|
uint16_t addr, bool dump_read) |
|
{ |
|
#ifdef CONFIG_I2C_DUMP_MESSAGES_ALLOWLIST |
|
bool found_dev = 0; |
|
|
|
for (int a = 0; a < ARRAY_SIZE(messages_allowlist); a++) { |
|
struct i2c_dt_spec *allowed = &messages_allowlist[a]; |
|
|
|
if (dev != allowed->bus || addr != allowed->addr) { |
|
continue; |
|
} else { |
|
found_dev = 1; |
|
break; |
|
} |
|
} |
|
|
|
if (!found_dev) { |
|
return; |
|
} |
|
#endif |
|
|
|
LOG_DBG("I2C msg: %s, addr=%x", dev->name, addr); |
|
for (unsigned int i = 0; i < num_msgs; i++) { |
|
const struct i2c_msg *msg = &msgs[i]; |
|
const bool is_read = msg->flags & I2C_MSG_READ; |
|
const bool dump_data = dump_read || !is_read; |
|
|
|
if (msg->len == 1 && dump_data) { |
|
LOG_DBG(" %c %2s %1s len=01: %02x", is_read ? 'R' : 'W', |
|
msg->flags & I2C_MSG_RESTART ? "Sr" : "", |
|
msg->flags & I2C_MSG_STOP ? "P" : "", msg->buf[0]); |
|
} else { |
|
LOG_DBG(" %c %2s %1s len=%02x: ", is_read ? 'R' : 'W', |
|
msg->flags & I2C_MSG_RESTART ? "Sr" : "", |
|
msg->flags & I2C_MSG_STOP ? "P" : "", msg->len); |
|
if (dump_data) { |
|
LOG_HEXDUMP_DBG(msg->buf, msg->len, "contents:"); |
|
} |
|
} |
|
} |
|
}
|
|
|