4  * SPDX-License-Identifier: Apache-2.0
7 #include <zephyr/drivers/i2c.h>
30 		length -= 1;  in get_bytes_count_for_hex()
37  * This sends I2C messages without any data (i.e. stop condition after
41  * WARNING: As there is no standard I2C detection command, this code
44  * your I2C bus, cause data loss, and is known to corrupt the Atmel
47  * https://manpages.debian.org/buster/i2c-tools/i2cdetect.8.en.html
49 /* i2c scan <device> */
59 		shell_error(shell_ctx, "I2C: Device driver %s not found.",  in cmd_i2c_scan()
61 		return -ENODEV;  in cmd_i2c_scan()
86 				shell_fprintf(shell_ctx, SHELL_NORMAL, "-- ");  in cmd_i2c_scan()
98 /* i2c recover <device> */
107 		shell_error(shell_ctx, "I2C: Device driver %s not found.",  in cmd_i2c_recover()
109 		return -ENODEV;  in cmd_i2c_recover()
114 		shell_error(shell_ctx, "I2C: Bus recovery failed (err %d)",  in cmd_i2c_recover()
130 	uint8_t buf[MAX_I2C_BYTES + MAX_BYTES_FOR_REGISTER_INDEX - 1];  in i2c_write_from_buffer()
140 		shell_error(shell_ctx, "I2C: Device driver %s not found.",  in i2c_write_from_buffer()
142 		return -ENODEV;  in i2c_write_from_buffer()
152 		data_length = MAX_I2C_BYTES - reg_addr_bytes;  in i2c_write_from_buffer()
154 			   MAX_I2C_BYTES - reg_addr_bytes);  in i2c_write_from_buffer()
163 			buf + MAX_BYTES_FOR_REGISTER_INDEX - reg_addr_bytes,  in i2c_write_from_buffer()
168 		return -EIO;  in i2c_write_from_buffer()
174 /* i2c write <device> <dev_addr> <reg_addr> [<byte1>, ...] */
180 				     &argv[4], argc - 4);  in cmd_i2c_write()
183 /* i2c write_byte <device> <dev_addr> <reg_addr> <value> */
203 		shell_error(shell_ctx, "I2C: Device driver %s not found.",  in i2c_read_to_buffer()
205 		return -ENODEV;  in i2c_read_to_buffer()
220 				     reg_addr_buf + MAX_BYTES_FOR_REGISTER_INDEX - reg_addr_bytes,  in i2c_read_to_buffer()
229 		return -EIO;  in i2c_read_to_buffer()
235 /* i2c read_byte <device> <dev_addr> <reg_addr> */
252 /* i2c read <device> <dev_addr> <reg_addr> [<numbytes>] */
278 /* i2c direct_read <device> <dev_addr> [<numbytes>] */
302 /* i2c speed <device> <speed>
303  * For: speed see constants like I2C_SPEED_STANDARD
310 	uint32_t speed;  in cmd_i2c_speed()  local
315 		shell_error(shell_ctx, "I2C: Device driver %s not found.",  in cmd_i2c_speed()
317 		return -ENODEV;  in cmd_i2c_speed()
320 	speed = strtol(argv[ARGV_DEV + 1], NULL, 10);  in cmd_i2c_speed()
324 		dev_config |= I2C_SPEED_SET(speed);  in cmd_i2c_speed()
327 		dev_config = I2C_MODE_CONTROLLER | I2C_SPEED_SET(speed);  in cmd_i2c_speed()
332 		shell_error(shell_ctx, "I2C: Failed to configure device: %s",  in cmd_i2c_speed()
334 		return -EIO;  in cmd_i2c_speed()
343 	entry->syntax = (dev != NULL) ? dev->name : NULL;  in device_name_get()
344 	entry->handler = NULL;  in device_name_get()
345 	entry->help = NULL;  in device_name_get()
346 	entry->subcmd = NULL;  in device_name_get()
353 		      "Scan I2C devices\n"
357 		      "Recover I2C bus\n"
361 		      "Read bytes from an I2C device\n"
365 		      "Read a byte from an I2C device\n"
369 		      "Read byte stream directly from an I2C device without "
374 		      "Write bytes to an I2C device\n"
378 		      "Write a byte to an I2C device\n"
381 	SHELL_CMD_ARG(speed, &dsub_device_name,
382 		      "Configure I2C bus speed\n"
383 		      "Usage: speed <device> <speed>",
388 SHELL_CMD_REGISTER(i2c, &sub_i2c_cmds, "I2C commands", NULL);