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https://github.com/zephyrproject-rtos/zephyr
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a45ece6984
i2c_transfer_async is the asynchronous version of i2c_transfer where the completion of the transfer is notified to the caller using a callback. This can be used in conjuction with the common callbacks and datatypes in async.h for directly doing an async transfer with an IPC object to notify a thread. Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
42 lines
928 B
C
42 lines
928 B
C
/*
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* Logging of I2C messages
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*
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* Copyright 2020 Google LLC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <zephyr/drivers/i2c.h>
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#define LOG_LEVEL CONFIG_I2C_LOG_LEVEL
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(i2c);
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#if defined(CONFIG_I2C_CALLBACK) && defined(CONFIG_POLL)
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void z_i2c_transfer_signal_cb(const struct device *dev,
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int result,
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void *data)
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{
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struct k_poll_signal *sig = (struct k_poll_signal *)data;
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k_poll_signal_raise(sig, result);
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}
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#endif
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void i2c_dump_msgs(const char *name, const struct i2c_msg *msgs,
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uint8_t num_msgs, uint16_t addr)
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{
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LOG_DBG("I2C msg: %s, addr=%x", name, addr);
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for (unsigned int i = 0; i < num_msgs; i++) {
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const struct i2c_msg *msg = &msgs[i];
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LOG_DBG(" %c len=%02x: ",
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msg->flags & I2C_MSG_READ ? 'R' : 'W', msg->len);
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if (!(msg->flags & I2C_MSG_READ)) {
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LOG_HEXDUMP_DBG(msg->buf, msg->len, "contents:");
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}
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}
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}
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