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RIOT/tests/periph_i2c/main.c
MrKevinWeiss de1c492f60 tests/periph_i2c: Update to new I2C API
2018-07-25 12:01:37 +02:00

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/*
* Copyright (C) 2014 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for the low-level I2C peripheral driver
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <stdio.h>
#include <stdlib.h>
#include "periph_conf.h"
#include "periph/i2c.h"
#include "shell.h"
#ifndef GET_I2C_CLK_SPD
#define GET_I2C_CLK_SPD(x) (-1)
#endif
#define BUFSIZE (128U)
static int i2c_dev = -1;
int cmd_i2c_assign_dev(int argc, char **argv)
{
int dev;
if (argc != 2) {
puts("Error: Invalid number of arguments!");
printf("Usage:\n%s: [DEVICE]\n", argv[0]);
puts(" with DEVICE:");
for (unsigned i = 0; i < I2C_NUMOF; i++) {
printf(" %u -> I2C_%u\n", i, i);
}
return 1;
}
dev = atoi(argv[1]);
if (dev < 0 || dev >= (int)I2C_NUMOF) {
puts("Error: Given device not available");
return 1;
}
else {
printf("I2C_%i successfully initialized as master!\n", dev);
i2c_dev = dev;
return 0;
}
return 1;
}
int cmd_i2c_acquire(int argc, char **argv)
{
int res;
(void)argv;
if (argc != 1) {
puts("Error: Aquire: Invalid number of arguments!");
return 1;
}
if (i2c_dev < 0) {
puts("Error: no I2C device was initialized");
return 1;
}
res = i2c_acquire(i2c_dev);
if (res == 0) {
printf("I2C_%i successfully acquired!\n", i2c_dev);
return 0;
}
else {
printf("Error: Device busy\n");
return 1;
}
return 1;
}
int cmd_i2c_release(int argc, char **argv)
{
(void)argv;
if (argc != 1) {
puts("Error: Aquire: Invalid number of arguments!");
return 1;
}
if (i2c_dev < 0) {
puts("Error: no I2C device was initialized");
return 1;
}
i2c_release(i2c_dev);
printf("I2C_%i successfully released!\n", i2c_dev);
return 0;
}
int cmd_i2c_read_reg(int argc, char **argv)
{
int res;
uint8_t addr, reg, flags;
uint8_t data[1];
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (argc < 3) {
puts("Error: not enough arguments given");
printf("Usage:\n%s ADDR REG FLAG\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
reg = atoi(argv[2]);
flags = atoi(argv[3]);
printf("i2c_read_reg(I2C_%i, 0x%02x, 0x%02x)\n", i2c_dev, addr, reg);
res = i2c_read_reg(i2c_dev, addr, reg, data, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully read 1 byte from reg 0x%02x:\n [",
i2c_dev, reg);
printf("0x%02x, ", data[0]);
puts("]");
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_read_regs(int argc, char **argv)
{
int res;
uint8_t addr, reg, flags;
int len;
uint8_t data[BUFSIZE];
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (argc < 4) {
puts("Error: not enough arguments given");
printf("Usage:\n%s ADDR REG LENGTH FLAG\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
reg = atoi(argv[2]);
len = atoi(argv[3]);
flags = atoi(argv[4]);
if (len < 1 || len > (int)BUFSIZE) {
puts("Error: invalid LENGTH parameter given");
return 1;
}
else {
printf("i2c_read_regs(I2C_%i, 0x%02x, 0x%02x, %i)\n", i2c_dev, addr,
reg, len);
res = i2c_read_regs(i2c_dev, addr, reg, data, len, flags);
}
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully read %i bytes from reg 0x%02x:\n [",
i2c_dev, len, reg);
for (int i = 0; i < len; i++) {
printf("0x%02x, ", data[i]);
}
puts("]");
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_read_byte(int argc, char **argv)
{
int res;
uint16_t addr;
uint8_t flags;
uint8_t data[1];
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (argc < 3) {
puts("Error: not enough arguments given");
printf("Usage:\n%s ADDR FLAG\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
flags = atoi(argv[2]);
printf("i2c_read_byte(I2C_%i, 0x%02x, 0x%02x)\n", i2c_dev, addr, flags);
res = i2c_read_byte(i2c_dev, addr, data, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully read 1 byte:\n [", i2c_dev);
printf("0x%02x, ", data[0]);
puts("]");
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_read_bytes(int argc, char **argv)
{
int res;
uint16_t addr;
int len;
uint8_t flags;
uint8_t data[BUFSIZE];
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (argc < 4) {
puts("Error: not enough arguments given");
printf("Usage:\n%s ADDR LENGTH FLAG\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
len = atoi(argv[2]);
flags = atoi(argv[3]);
if (len < 1 || len > (int)BUFSIZE) {
puts("Error: invalid LENGTH parameter given\n");
return 1;
}
else {
printf("i2c_read_bytes(I2C_%i, 0x%02x, %i, 0x%02x)\n", i2c_dev, addr,
len, flags);
res = i2c_read_bytes(i2c_dev, addr, data, len, flags);
}
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully read %i bytes:\n [", i2c_dev, len);
for (int i = 0; i < len; i++) {
printf("0x%02x, ", data[i]);
}
puts("]");
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_write_byte(int argc, char **argv)
{
int res;
uint8_t addr;
uint8_t flags;
uint8_t data;
if (i2c_dev < 0) {
puts("Error: no I2C device was initialized");
return 1;
}
if (argc != 4) {
puts("Error: invalid number of arguments given");
printf("Usage:\n%s: ADDR FLAG BYTE0\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
flags = atoi(argv[2]);
data = atoi(argv[3]);
printf("i2c_write_byte(I2C_%i, 0x%02x, 0x%02x, [0x%02x", i2c_dev, addr,
flags, data);
puts("])");
res = i2c_write_byte(i2c_dev, addr, data, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_DATA_NACK) {
puts("Error: data NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully wrote 1 byte to the bus\n", i2c_dev);
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_write_bytes(int argc, char **argv)
{
int res;
uint8_t addr;
int len = argc - 3;
uint8_t flags;
uint8_t data[BUFSIZE];
if (i2c_dev < 0) {
puts("Error: no I2C device was initialized");
return 1;
}
if (argc < 4) {
puts("Error: not enough arguments given");
printf("Usage:\n%s: ADDR FLAG BYTE0 [BYTE1 [BYTE_n [...]]]\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
flags = atoi(argv[2]);
for (int i = 0; i < len; i++) {
data[i] = atoi(argv[i + 3]);
}
printf("i2c_write_bytes(I2C_%i, 0x%02x, 0x%02x, [", i2c_dev, addr, flags);
for (int i = 0; i < len; i++) {
printf(", 0x%02x", data[i]);
}
puts("])");
res = i2c_write_bytes(i2c_dev, addr, data, len, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_DATA_NACK) {
puts("Error: data NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully wrote %i bytes\n", i2c_dev, len);
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_write_reg(int argc, char **argv)
{
int res;
uint8_t addr, reg, flags;
uint8_t data;
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (argc != 5) {
puts("Error: invalid number of arguments given");
printf("Usage:\n%s ADDR REG FLAG BYTE0\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
reg = atoi(argv[2]);
flags = atoi(argv[3]);
data = atoi(argv[4]);
printf("i2c_write_reg(I2C_%i, 0x%02x, 0x%02x, 0x%02x, [0x%02x", i2c_dev,
addr, reg, flags, data);
puts("])");
res = i2c_write_reg(i2c_dev, addr, reg, data, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_DATA_NACK) {
puts("Error: data NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully wrote 1 byte\n", i2c_dev);
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_write_regs(int argc, char **argv)
{
int res;
uint8_t addr, reg, flags;
int len = argc - 4;
uint8_t data[BUFSIZE];
if (i2c_dev < 0) {
puts("Error: no I2C device initialized");
return 1;
}
if (len < 1) {
puts("Error: not enough arguments given");
printf("Usage:\n%s ADDR REG FLAG BYTE0 [BYTE1 ...]\n", argv[0]);
return 1;
}
addr = atoi(argv[1]);
reg = atoi(argv[2]);
flags = atoi(argv[3]);
for (int i = 0; i < len; i++) {
data[i] = atoi(argv[i + 4]);
}
printf("i2c_write_regs(I2C_%i, 0x%02x, 0x%02x, 0x%02x[", i2c_dev, addr,
reg, flags);
for (int i = 0; i < len; i++) {
printf("0x%02x, ", data[i]);
}
puts("])");
res = i2c_write_regs(i2c_dev, addr, reg, data, len, flags);
if (res == I2C_ADDR_NACK) {
puts("Error: addr NACK");
return 1;
}
else if (res == I2C_DATA_NACK) {
puts("Error: data NACK");
return 1;
}
else if (res == I2C_ERR) {
puts("Error: i2c return error");
return 1;
}
else if (res == I2C_ACK) {
printf("I2C_%i: successfully wrote %i bytes to register 0x%02x\n",
i2c_dev, len, reg);
return 0;
}
puts("Error: Unknown Error");
return 1;
}
int cmd_i2c_get_devs(int argc, char **argv)
{
(void)argv;
if (argc != 1) {
puts("Error: No args needed :)\n");
return 1;
}
printf("Amount of i2c devices: %d\n", I2C_NUMOF);
return 0;
}
int cmd_i2c_get_speed(int argc, char **argv)
{
(void)argv;
if (argc != 1) {
puts("Error: No args needed :)");
return 1;
}
if (i2c_dev < 0) {
puts("Error: no I2C device was initialized");
return 1;
}
switch (GET_I2C_CLK_SPD(i2c_dev)) {
case I2C_SPEED_LOW:
printf("I2C%d clk speed: 0 -> ~10kbit/s",i2c_dev);
break;
case I2C_SPEED_NORMAL:
printf("I2C%d clk speed: 1 -> ~100kbit/s",i2c_dev);
break;
case I2C_SPEED_FAST:
printf("I2C%d clk speed: 2 -> ~400kbit/s",i2c_dev);
break;
case I2C_SPEED_FAST_PLUS:
printf("I2C%d clk speed: 3 -> ~1Mbit/s",i2c_dev);
break;
case I2C_SPEED_HIGH:
printf("I2C%d clk speed: 4 -> ~10kbit/s",i2c_dev);
break;
default:
printf("I2C%d clk speed: ? -> NOT DEFINED\n",i2c_dev);
return 1;
break;
}
printf("\n");
return 0;
}
static const shell_command_t shell_commands[] = {
{ "i2c_assign_dev", "Selects the device", cmd_i2c_assign_dev },
{ "i2c_acquire", "Get access to the I2C bus", cmd_i2c_acquire },
{ "i2c_release", "Release to the I2C bus", cmd_i2c_release },
{ "i2c_read_reg", "Read byte from register", cmd_i2c_read_reg },
{ "i2c_read_regs", "Read bytes from registers", cmd_i2c_read_regs },
{ "i2c_read_byte", "Read byte from the I2C device", cmd_i2c_read_byte },
{ "i2c_read_bytes", "Read bytes from the I2C device", cmd_i2c_read_bytes },
{ "i2c_write_byte", "Write byte to the I2C device", cmd_i2c_write_byte },
{ "i2c_write_bytes", "Write bytes to the I2C device", cmd_i2c_write_bytes },
{ "i2c_write_reg", "Write byte to register", cmd_i2c_write_reg },
{ "i2c_write_regs", "Write bytes to registers", cmd_i2c_write_regs },
{ "i2c_get_devs", "Gets amount of supported i2c devices", cmd_i2c_get_devs },
{ "i2c_get_speed", "Get the boards clk speed", cmd_i2c_get_speed },
{ NULL, NULL, NULL }
};
int main(void)
{
puts("Test for the low-level I2C driver");
/* define own shell commands */
char line_buf[SHELL_DEFAULT_BUFSIZE];
shell_run(shell_commands, line_buf, SHELL_DEFAULT_BUFSIZE);
return 0;
}
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