| /* |
| * Copyright (c) 2018 Prevas A/S |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <shell/shell.h> |
| #include <stdlib.h> |
| #include <drivers/i2c.h> |
| #include <string.h> |
| #include <sys/util.h> |
| |
| #include <logging/log.h> |
| LOG_MODULE_REGISTER(i2c_shell, CONFIG_LOG_DEFAULT_LEVEL); |
| |
| #define I2C_DEVICE_PREFIX "I2C_" |
| |
| extern struct device __device_start[]; |
| extern struct device __device_end[]; |
| |
| static int cmd_i2c_scan(const struct shell *shell, |
| size_t argc, char **argv) |
| { |
| struct device *dev; |
| u8_t cnt = 0, first = 0x04, last = 0x77; |
| |
| dev = device_get_binding(argv[1]); |
| |
| if (!dev) { |
| shell_error(shell, "I2C: Device driver %s not found.", |
| argv[1]); |
| return -ENODEV; |
| } |
| |
| shell_print(shell, |
| " 0 1 2 3 4 5 6 7 8 9 a b c d e f"); |
| for (u8_t i = 0; i <= last; i += 16) { |
| shell_fprintf(shell, SHELL_NORMAL, "%02x: ", i); |
| for (u8_t j = 0; j < 16; j++) { |
| if (i + j < first || i + j > last) { |
| shell_fprintf(shell, SHELL_NORMAL, " "); |
| continue; |
| } |
| |
| struct i2c_msg msgs[1]; |
| u8_t dst; |
| |
| /* Send the address to read from */ |
| msgs[0].buf = &dst; |
| msgs[0].len = 0U; |
| msgs[0].flags = I2C_MSG_WRITE | I2C_MSG_STOP; |
| if (i2c_transfer(dev, &msgs[0], 1, i + j) == 0) { |
| shell_fprintf(shell, SHELL_NORMAL, |
| "%02x ", i + j); |
| ++cnt; |
| } else { |
| shell_fprintf(shell, SHELL_NORMAL, "-- "); |
| } |
| } |
| shell_print(shell, ""); |
| } |
| |
| shell_print(shell, "%u devices found on %s", |
| cnt, argv[1]); |
| |
| return 0; |
| } |
| |
| static int cmd_i2c_recover(const struct shell *shell, |
| size_t argc, char **argv) |
| { |
| struct device *dev; |
| int err; |
| |
| dev = device_get_binding(argv[1]); |
| if (!dev) { |
| shell_error(shell, "I2C: Device driver %s not found.", argv[1]); |
| return -ENODEV; |
| } |
| |
| err = i2c_recover_bus(dev); |
| if (err) { |
| shell_error(shell, "I2C: Bus recovery failed (err %d)", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static void device_name_get(size_t idx, struct shell_static_entry *entry); |
| |
| SHELL_DYNAMIC_CMD_CREATE(dsub_device_name, device_name_get); |
| |
| static void device_name_get(size_t idx, struct shell_static_entry *entry) |
| { |
| int device_idx = 0; |
| struct device *dev; |
| |
| entry->syntax = NULL; |
| entry->handler = NULL; |
| entry->help = NULL; |
| entry->subcmd = &dsub_device_name; |
| |
| for (dev = __device_start; dev != __device_end; dev++) { |
| if ((dev->driver_api != NULL) && |
| strstr(dev->name, I2C_DEVICE_PREFIX) != NULL && |
| strcmp(dev->name, "") && (dev->name != NULL)) { |
| if (idx == device_idx) { |
| entry->syntax = dev->name; |
| break; |
| } |
| device_idx++; |
| } |
| } |
| } |
| |
| SHELL_STATIC_SUBCMD_SET_CREATE(sub_i2c_cmds, |
| SHELL_CMD(scan, &dsub_device_name, |
| "Scan I2C devices", cmd_i2c_scan), |
| SHELL_CMD(recover, &dsub_device_name, |
| "Recover I2C bus", cmd_i2c_recover), |
| SHELL_SUBCMD_SET_END /* Array terminated. */ |
| ); |
| |
| SHELL_CMD_REGISTER(i2c, &sub_i2c_cmds, "I2C commands", NULL); |