diff options
Diffstat (limited to 'common/recipes-applications/smbus-test/files/smbus-test.c')
| -rw-r--r-- | common/recipes-applications/smbus-test/files/smbus-test.c | 632 |
1 files changed, 0 insertions, 632 deletions
diff --git a/common/recipes-applications/smbus-test/files/smbus-test.c b/common/recipes-applications/smbus-test/files/smbus-test.c deleted file mode 100644 index 5178f798..00000000 --- a/common/recipes-applications/smbus-test/files/smbus-test.c +++ /dev/null @@ -1,632 +0,0 @@ -/***************************************************************************** -* -* Copyright (c) 2014, Advanced Micro Devices, Inc. -* All rights reserved. -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are met: -* * Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* * Redistributions in binary form must reproduce the above copyright -* notice, this list of conditions and the following disclaimer in the -* documentation and/or other materials provided with the distribution. -* * Neither the name of Advanced Micro Devices, Inc. nor the names of -* its contributors may be used to endorse or promote products derived -* from this software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND -* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY -* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -* -* -***************************************************************************/ -#include <unistd.h> -#include <stdio.h> -#include <stdlib.h> -#include <fcntl.h> -#include <signal.h> -#include <dirent.h> - -#include <sys/types.h> -#include <sys/ioctl.h> -#include <sys/stat.h> - -#include <readline/readline.h> - -#include "i2c-dev.h" - -#define SMBUS_APP_VERSION "0.1" - -static int adapter_nr = -1; -static int slave_addr = 0xFF; -static char filename[20]; -static int fd = -1; - -char *show_prompt(void) -{ - return "$ "; -} - -void sighandler(int sig) -{ - printf("\n%s", show_prompt()); -} - -void show_license(void) -{ - printf("/*****************************************************************************\n" - "*\n" - "* Copyright (c) 2014, Advanced Micro Devices, Inc.\n" - "* All rights reserved.\n" - "*\n" - "* Redistribution and use in source and binary forms, with or without\n" - "* modification, are permitted provided that the following conditions are met:\n" - "* * Redistributions of source code must retain the above copyright\n" - "* notice, this list of conditions and the following disclaimer.\n" - "* * Redistributions in binary form must reproduce the above copyright\n" - "* notice, this list of conditions and the following disclaimer in the\n" - "* documentation and/or other materials provided with the distribution.\n" - "* * Neither the name of Advanced Micro Devices, Inc. nor the names of\n" - "* its contributors may be used to endorse or promote products derived\n" - "* from this software without specific prior written permission.\n" - "*\n" - "* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n" - "* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n" - "* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n" - "* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY\n" - "* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n" - "* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n" - "* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n" - "* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" - "* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n" - "* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" - "*\n" - "*\n" - "***************************************************************************/\n"); -} - -void print_usage(void) -{ - printf("\nCommands Supported ->\n"); - printf(" enumerate : List all adapters available\n"); - printf(" setadapternum <num> : Set the adapter number\n"); - printf(" getadapternum : Get the current adapter number\n"); - printf(" setslaveaddr <addr> : Set the slave device address\n"); - printf(" getslaveaddr : Get the current slave device address\n"); - printf(" getadapterfunc : Displays the functionalities supported by the adapter\n"); - printf(" quicksend <bit> : Sends a single bit (0 or 1) to the device\n"); - printf(" receivebyte : Receive a single byte from the slave device\n"); - printf(" sendbyte <byte> : Sends a single byte to the slave device\n"); - printf(" readbyte <register> : Reads a byte at register of the slave device\n"); - printf(" writebyte <register> <byte> : Writes a byte at register of the slave device\n"); - printf(" readword <register> : Reads a word at register of the slave device\n"); - printf(" writeword <register> <word> : Writes a word at register of the slave device\n"); - printf(" readblock <register> : Reads a block of data from register of the slave device\n"); - printf(" writeblock <register> <filename> : Writes a block of data read from filename to register\n" - " of the slave device\n"); - printf(" license : Displays the terms of LICENSE for this application\n"); - printf(" help : Displays help text\n"); - printf(" exit : Exits the application\n\n"); -} - -void parse_cmd(const char *cmdline) -{ - struct i2c_smbus_ioctl_data param; - union i2c_smbus_data smbus_data; - unsigned long funcs; - - if ((cmdline == NULL) || (strncmp(cmdline, "exit", 4) == 0)) { - printf("\nExiting...\n"); - if((fd != -1) && (close(fd) < 0)) - printf("Error closing device\n\n"); - - exit(EXIT_SUCCESS); - } else if (strncmp(cmdline, "enumerate", 9) == 0) { - DIR *dir; - struct dirent *dir_entry; - int adapter_found = 0; - - /* Get the directory handle */ - if ((dir = opendir("/dev")) == NULL) { - printf("Failed to open directory /dev. Probably you " - "do not have right privilege!\n\n"); - exit(EXIT_FAILURE); - } - - /* Iterate over all the directory entries */ - while ((dir_entry = readdir(dir)) != NULL) { - /* - * If the file is a character device, and its signature - * matches i2c-x, then we print the corresponding file. - */ - if ((dir_entry->d_type == DT_CHR) && - (strncmp(dir_entry->d_name, "i2c-", 4) == 0)) { - printf("%s\n", dir_entry->d_name); - adapter_found = 1; - } - } - - printf("\n"); - - /* - * In case we did not find even a single adapter, we print a - * message and exit. - */ - if (!adapter_found) { - printf("No adapters found, load i2c-dev kernel module and try again\n\n"); - exit(EXIT_FAILURE); - } - } else if (strncmp(cmdline, "setadapternum", 13) == 0) { - int input; - int file_desc; - - cmdline += 14; - if (sscanf(cmdline, "%d", &input) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - snprintf(filename, 19, "/dev/i2c-%d", input); - file_desc = open(filename, O_RDWR); - if (file_desc < 0) { - printf("Error opening file %s\n\n", filename); - return; - } - - /* Once we have validated inputs, we store them into the global - * variables used at other places in the program. - */ - fd = file_desc; - adapter_nr = input; - printf("Adapter Number set to %d\n\n", adapter_nr); - } else if (strncmp(cmdline, "getadapternum", 13) == 0) { - if (adapter_nr == -1) - printf("Adapter Number not set\n\n"); - else - printf("Adapter Number set to %d\n\n", adapter_nr); - } else if (strncmp(cmdline, "setslaveaddr", 12) == 0) { - int addr; - - cmdline += 13; - if (sscanf(cmdline, "0x%x", &addr) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - /* Set the slave address */ - if (ioctl(fd, I2C_SLAVE, addr) < 0) { - printf("Error setting slave address. Please make sure " - "to provide 7-bit slave address\n\n"); - return; - } - - slave_addr = addr; - printf("Slave Address set to 0x%x\n\n", slave_addr); - } else if (strncmp(cmdline, "getslaveaddr", 12) == 0) { - if (slave_addr == 0xFF) - printf("Slave Address not set\n\n"); - else - printf("Slave Address set to 0x%x\n\n", slave_addr); - } else if (strncmp(cmdline, "getadapterfunc", 14) == 0) { - if (adapter_nr == -1) { - printf("Please set adapter first\n\n"); - return; - } - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (funcs & I2C_FUNC_I2C) - printf("I2C_FUNC_I2C\n"); - if (funcs & I2C_FUNC_10BIT_ADDR) - printf("I2C_FUNC_10BIT_ADDR\n"); - if (funcs & I2C_FUNC_PROTOCOL_MANGLING) - printf("I2C_FUNC_PROTOCOL_MANGLING\n"); - if (funcs & I2C_FUNC_SMBUS_PEC) - printf("I2C_FUNC_SMBUS_PEC\n"); - if (funcs & I2C_FUNC_SMBUS_BLOCK_PROC_CALL) - printf("I2C_FUNC_SMBUS_BLOCK_PROC_CALL\n"); - if (funcs & I2C_FUNC_SMBUS_QUICK) - printf("I2C_FUNC_SMBUS_QUICK\n"); - if (funcs & I2C_FUNC_SMBUS_READ_BYTE) - printf("I2C_FUNC_SMBUS_READ_BYTE\n"); - if (funcs & I2C_FUNC_SMBUS_WRITE_BYTE) - printf("I2C_FUNC_SMBUS_WRITE_BYTE\n"); - if (funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA) - printf("I2C_FUNC_SMBUS_READ_BYTE_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_WRITE_BYTE_DATA) - printf("I2C_FUNC_SMBUS_WRITE_BYTE_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_READ_WORD_DATA) - printf("I2C_FUNC_SMBUS_READ_WORD_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_WRITE_WORD_DATA) - printf("I2C_FUNC_SMBUS_WRITE_WORD_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_PROC_CALL) - printf("I2C_FUNC_SMBUS_PROC_CALL\n"); - if (funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA) - printf("I2C_FUNC_SMBUS_READ_BLOCK_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) - printf("I2C_FUNC_SMBUS_WRITE_BLOCK_DATA\n"); - if (funcs & I2C_FUNC_SMBUS_READ_I2C_BLOCK) - printf("I2C_FUNC_SMBUS_READ_I2C_BLOCK\n"); - if (funcs & I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) - printf("I2C_FUNC_SMBUS_WRITE_I2C_BLOCK\n"); - - printf("\n"); - } else if (strncmp(cmdline, "quicksend", 9) == 0) { - int bit; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_QUICK)) { - printf("SMBus Quick command not supported by the adapter\n\n"); - return; - } - - cmdline += 10; - if (sscanf(cmdline, "%d", &bit) < 1) { - printf("Invalid input, please try again\n\n"); - return; - } - - /* Sanity check */ - if ((bit != 0) && (bit != 1)) { - printf("Only 0 or 1 is allowed\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - param.data = NULL; - - if (bit) - param.read_write = I2C_SMBUS_READ; - else - param.read_write = I2C_SMBUS_WRITE; - - param.size = I2C_SMBUS_QUICK; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Quick command failed\n\n"); - return; - } - - printf("Quick Send %d successfull\n\n", bit); - } else if (strncmp(cmdline, "receivebyte", 11) == 0) { - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BYTE)) { - printf("SMBus receivebyte command not supported by adapter\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.read_write = I2C_SMBUS_READ; - param.size = I2C_SMBUS_BYTE; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Receive Byte command failed\n\n"); - return; - } - - printf("Byte Received 0x%x\n\n", param.data->byte); - } else if (strncmp(cmdline, "sendbyte", 8) == 0) { - int byte; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BYTE)) { - printf("SMBus sendbyte command not supported by adapter\n"); - return; - } - - cmdline += 9; - if (sscanf(cmdline, "0x%x", &byte) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - param.data = NULL; - - param.read_write = I2C_SMBUS_WRITE; - param.command = byte; - param.size = I2C_SMBUS_BYTE; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Send Byte command failed\n\n"); - return; - } - - printf("Sent 0x%x to slave\n\n", byte); - } else if (strncmp(cmdline, "readbyte", 8) == 0) { - int reg; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BYTE_DATA)) { - printf("SMBus readbyte command not supported by adapter\n"); - return; - } - - cmdline += 9; - if (sscanf(cmdline, "0x%x", ®) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_READ; - param.size = I2C_SMBUS_BYTE_DATA; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Read Byte Data command failed\n\n"); - return; - } - - printf("Read 0x%x at register 0x%x of the slave\n\n", param.data->byte, reg); - } else if (strncmp(cmdline, "writebyte", 9) == 0) { - int reg, byte; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BYTE_DATA)) { - printf("SMBus writebyte command not supported by adapter\n"); - return; - } - - cmdline += 10; - if (sscanf(cmdline, "0x%x 0x%x", ®, &byte) < 2) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_WRITE; - param.size = I2C_SMBUS_BYTE_DATA; - param.data->byte = byte; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Write Byte Data command failed\n\n"); - return; - } - - printf("Written 0x%x to register 0x%x of the slave\n\n", byte, reg); - } else if (strncmp(cmdline, "readword", 8) == 0) { - int reg; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_WORD_DATA)) { - printf("SMBus readword command not supported by adapter\n"); - return; - } - - cmdline += 9; - if (sscanf(cmdline, "0x%x", ®) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_READ; - param.size = I2C_SMBUS_WORD_DATA; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Read Word Data command failed\n\n"); - return; - } - - printf("Read 0x%.4x at register 0x%x of the slave\n\n", param.data->word, reg); - } else if (strncmp(cmdline, "writeword", 9) == 0) { - int reg, word; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_WORD_DATA)) { - printf("SMBus writeword command not supported by adapter\n"); - return; - } - - cmdline += 10; - if (sscanf(cmdline, "0x%x 0x%x", ®, &word) < 2) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_WRITE; - param.size = I2C_SMBUS_WORD_DATA; - param.data->word = word; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Write Word Data command failed\n\n"); - return; - } - - printf("Written 0x%x to register 0x%x of the slave\n\n", word, reg); - } else if (strncmp(cmdline, "readblock", 9) == 0) { - int reg; - int i; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BLOCK_DATA)) { - printf("SMBus readblock command not supported by adapter\n"); - return; - } - - cmdline += 10; - if (sscanf(cmdline, "0x%x", ®) < 1) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_READ; - param.size = I2C_SMBUS_BLOCK_DATA; - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Read Block Data command failed\n\n"); - return; - } - - printf("Reading %d bytes from register 0x%x:\n", param.data->block[0], reg); - for (i = 1; i <= param.data->block[0]; i++) - printf("0x%.2x ", param.data->block[i]); - printf("\n\n"); - } else if (strncmp(cmdline, "writeblock", 10) == 0) { - int reg; - char infile[256]; - FILE *file; - int data; - int num_bytes = 0; - int i; - - /* Get the adapter functionality */ - if (ioctl(fd, I2C_FUNCS, &funcs) < 0) { - printf("Error getting adapter functionalities\n\n"); - return; - } - - if (!(funcs & I2C_FUNC_SMBUS_BLOCK_DATA)) { - printf("SMBus writeblock command not supported by adapter\n"); - return; - } - - cmdline += 11; - if (sscanf(cmdline, "0x%x %s", ®, infile) < 2) { - printf("Invalid inputs, please try again\n\n"); - return; - } - - /* open infile for reading */ - if ((file = fopen(infile, "r")) == NULL) { - printf("Failed to open file %s\n\n", infile); - return; - } - - /* setup parameters to the IOCTL call */ - memset(¶m, 0, sizeof(struct i2c_smbus_ioctl_data)); - memset(&smbus_data, 0, sizeof(union i2c_smbus_data)); - param.data = &smbus_data; - - param.command = reg; - param.read_write = I2C_SMBUS_WRITE; - param.size = I2C_SMBUS_BLOCK_DATA; - - /* - * populate block data to be sent to the device. SMBus sets a - * limit of 32 bytes to be sent or received in a block. - */ - for (i = 1; i <= 32; i++) { - if (fscanf(file, "0x%x ", &data) == EOF) - break; - - param.data->block[i] = data; - num_bytes++; - } - - /* The very first block data should be the number of bytes - * in the block. - */ - param.data->block[0] = num_bytes; - - printf("Writing %d bytes to register 0x%.2x of device\n\n", - param.data->block[0], reg); - - /* Execute block write command */ - if (ioctl(fd, I2C_SMBUS, ¶m) == -1) { - printf("SMBus Write Block Data command failed\n\n"); - return; - } - - fclose(file); - } else if (strncmp(cmdline, "license", 7) == 0) { - show_license(); - } else if (strncmp(cmdline, "help", 4) == 0) { - print_usage(); - } else { - printf("\nUnknown command\n"); - print_usage(); - } -} - -int main(void) -{ - char *cmdline= NULL; - - printf("SMBus sample application version: %s\n", SMBUS_APP_VERSION); - printf("Copyright (c) 2014, Advanced Micro Devices, Inc.\n" - "This sample application comes with ABSOLUTELY NO WARRANTY;\n" - "This is free software, and you are welcome to redistribute it\n" - "under certain conditions; type `license` for details.\n\n"); - - /* Handler for Ctrl+C */ - signal(SIGINT, sighandler); - - while (1) { - cmdline = readline(show_prompt()); - parse_cmd(cmdline); - /* Free the memory malloc'ed by readline */ - free(cmdline); - } - - /* Should never reach here */ - return 0; -} |