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/*
/ _____) _ | |
( (____ _____ ____ _| |_ _____ ____| |__
\____ \| ___ | (_ _) ___ |/ ___) _ \
_____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
©2013 Semtech-Cycleo
Description:
SPI stress test
License: Revised BSD License, see LICENSE.TXT file include in the project
Maintainer: Sylvain Miermont
*/
/* -------------------------------------------------------------------------- */
/* --- DEPENDANCIES --------------------------------------------------------- */
/* fix an issue between POSIX and C99 */
#if __STDC_VERSION__ >= 199901L
#define _XOPEN_SOURCE 600
#else
#define _XOPEN_SOURCE 500
#endif
#include <stdint.h> /* C99 types */
#include <stdbool.h> /* bool type */
#include <stdio.h> /* printf fprintf sprintf fopen fputs */
#include <signal.h> /* sigaction */
#include <unistd.h> /* getopt access */
#include <stdlib.h> /* rand */
#include "loragw_reg.h"
/* -------------------------------------------------------------------------- */
/* --- PRIVATE MACROS ------------------------------------------------------- */
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#define MSG(args...) fprintf(stderr, args) /* message that is destined to the user */
/* -------------------------------------------------------------------------- */
/* --- PRIVATE CONSTANTS ---------------------------------------------------- */
#define VERS 103
#define READS_WHEN_ERROR 16 /* number of times a read is repeated if there is a read error */
#define BUFF_SIZE 1024
/* -------------------------------------------------------------------------- */
/* --- PRIVATE VARIABLES (GLOBAL) ------------------------------------------- */
/* signal handling variables */
struct sigaction sigact; /* SIGQUIT&SIGINT&SIGTERM signal handling */
static int exit_sig = 0; /* 1 -> application terminates cleanly (shut down hardware, close open files, etc) */
static int quit_sig = 0; /* 1 -> application terminates without shutting down the hardware */
/* -------------------------------------------------------------------------- */
/* --- PRIVATE FUNCTIONS DECLARATION ---------------------------------------- */
static void sig_handler(int sigio);
void usage (void);
/* -------------------------------------------------------------------------- */
/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */
static void sig_handler(int sigio) {
if (sigio == SIGQUIT) {
quit_sig = 1;;
} else if ((sigio == SIGINT) || (sigio == SIGTERM)) {
exit_sig = 1;
}
}
/* describe command line options */
void usage(void) {
MSG( "Available options:\n");
MSG( " -h print this help\n");
MSG( " -t <int> specify which test you want to run (1-4)\n");
}
/* -------------------------------------------------------------------------- */
/* --- MAIN FUNCTION -------------------------------------------------------- */
int main(int argc, char **argv)
{
int i;
int xi = 0;
/* application option */
int test_number = 1;
int cycle_number = 0;
int repeats_per_cycle = 1000;
bool error = false;
/* in/out variables */
int32_t test_value;
int32_t read_value;
int32_t rb1, rb2, rb3; /* interstitial readbacks, to flush buffers if needed */
/* data buffer */
int32_t test_addr;
uint8_t test_buff[BUFF_SIZE];
uint8_t read_buff[BUFF_SIZE];
/* parse command line options */
while ((i = getopt (argc, argv, "ht:")) != -1) {
switch (i) {
case 'h':
usage();
return EXIT_FAILURE;
break;
case 't':
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < 1) || (xi > 4)) {
MSG("ERROR: invalid test number\n");
return EXIT_FAILURE;
} else {
test_number = xi;
}
break;
default:
MSG("ERROR: argument parsing use -h option for help\n");
usage();
return EXIT_FAILURE;
}
}
MSG("INFO: Starting Lora concentrator SPI stress-test number %i\n", test_number);
/* configure signal handling */
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigact.sa_handler = sig_handler;
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
/* start SPI link */
i = lgw_connect();
if (i != LGW_REG_SUCCESS) {
MSG("ERROR: lgw_connect() did not return SUCCESS");
return EXIT_FAILURE;
}
if (test_number == 1) {
/* single 8b register R/W stress test */
while ((quit_sig != 1) && (exit_sig != 1)) {
printf("Cycle %i > ", cycle_number);
for (i=0; i<repeats_per_cycle; ++i) {
test_value = (rand() % 256);
lgw_reg_w(LGW_IMPLICIT_PAYLOAD_LENGHT, test_value);
lgw_reg_r(LGW_IMPLICIT_PAYLOAD_LENGHT, &read_value);
if (read_value != test_value) {
error = true;
break;
}
}
if (error) {
printf("error during the %ith iteration: write 0x%02X, read 0x%02X\n", i+1, test_value, read_value);
printf("Repeat read of target register:");
for (i=0; i<READS_WHEN_ERROR; ++i) {
lgw_reg_r(LGW_IMPLICIT_PAYLOAD_LENGHT, &read_value);
printf(" 0x%02X", read_value);
}
printf("\n");
return EXIT_FAILURE;
} else {
printf("did %i R/W on an 8 bits reg with no error\n", repeats_per_cycle);
++cycle_number;
}
}
} else if (test_number == 2) {
/* single 8b register R/W with interstitial VERSION check stress test */
while ((quit_sig != 1) && (exit_sig != 1)) {
printf("Cycle %i > ", cycle_number);
for (i=0; i<repeats_per_cycle; ++i) {
test_value = (rand() % 256);
lgw_reg_r(LGW_VERSION, &rb1);
lgw_reg_w(LGW_IMPLICIT_PAYLOAD_LENGHT, test_value);
lgw_reg_r(LGW_VERSION, &rb2);
lgw_reg_r(LGW_IMPLICIT_PAYLOAD_LENGHT, &read_value);
lgw_reg_r(LGW_VERSION, &rb3);
if ((rb1 != VERS) || (rb2 != VERS) || (rb3 != VERS) || (read_value != test_value)) {
error = true;
break;
}
}
if (error) {
printf("error during the %ith iteration: write %02X, read %02X, version (%i, %i, %i)\n", i+1, test_value, read_value, rb1, rb2, rb3);
printf("Repeat read of target register:");
for (i=0; i<READS_WHEN_ERROR; ++i) {
lgw_reg_r(LGW_IMPLICIT_PAYLOAD_LENGHT, &read_value);
printf(" 0x%02X", read_value);
}
printf("\n");
return EXIT_FAILURE;
} else {
printf("did %i R/W on an 8 bits reg with no error\n", repeats_per_cycle);
++cycle_number;
}
}
} else if (test_number == 3) {
/* 32b register R/W stress test */
while ((quit_sig != 1) && (exit_sig != 1)) {
printf("Cycle %i > ", cycle_number);
for (i=0; i<repeats_per_cycle; ++i) {
test_value = (rand() & 0x0000FFFF);
test_value += (int32_t)(rand() & 0x0000FFFF) << 16;
lgw_reg_w(LGW_FSK_REF_PATTERN_LSB, test_value);
lgw_reg_r(LGW_FSK_REF_PATTERN_LSB, &read_value);
if (read_value != test_value) {
error = true;
break;
}
}
if (error) {
printf("error during the %ith iteration: write 0x%08X, read 0x%08X\n", i+1, test_value, read_value);
printf("Repeat read of target register:");
for (i=0; i<READS_WHEN_ERROR; ++i) {
lgw_reg_r(LGW_FSK_REF_PATTERN_LSB, &read_value);
printf(" 0x%08X", read_value);
}
printf("\n");
return EXIT_FAILURE;
} else {
printf("did %i R/W on a 32 bits reg with no error\n", repeats_per_cycle);
++cycle_number;
}
}
} else if (test_number == 4) {
/* databuffer R/W stress test */
while ((quit_sig != 1) && (exit_sig != 1)) {
for (i=0; i<BUFF_SIZE; ++i) {
test_buff[i] = rand() & 0xFF;
}
printf("Cycle %i > ", cycle_number);
test_addr = rand() & 0xFFFF;
lgw_reg_w(LGW_RX_DATA_BUF_ADDR, test_addr); /* write at random offset in memory */
lgw_reg_wb(LGW_RX_DATA_BUF_DATA, test_buff, BUFF_SIZE);
lgw_reg_w(LGW_RX_DATA_BUF_ADDR, test_addr); /* go back to start of segment */
lgw_reg_rb(LGW_RX_DATA_BUF_DATA, read_buff, BUFF_SIZE);
for (i=0; ((i<BUFF_SIZE) && (test_buff[i] == read_buff[i])); ++i);
if (i != BUFF_SIZE) {
printf("error during the buffer comparison\n");
printf("Written values:\n");
for (i=0; i<BUFF_SIZE; ++i) {
printf(" %02X ", test_buff[i]);
if (i%16 == 15) printf("\n");
}
printf("\n");
printf("Read values:\n");
for (i=0; i<BUFF_SIZE; ++i) {
printf(" %02X ", read_buff[i]);
if (i%16 == 15) printf("\n");
}
printf("\n");
lgw_reg_w(LGW_RX_DATA_BUF_ADDR, test_addr); /* go back to start of segment */
lgw_reg_rb(LGW_RX_DATA_BUF_DATA, read_buff, BUFF_SIZE);
printf("Re-read values:\n");
for (i=0; i<BUFF_SIZE; ++i) {
printf(" %02X ", read_buff[i]);
if (i%16 == 15) printf("\n");
}
printf("\n");
return EXIT_FAILURE;
} else {
printf("did a %i-byte R/W on a data buffer with no error\n", BUFF_SIZE);
++cycle_number;
}
}
} else {
MSG("ERROR: invalid test number");
usage();
}
/* close SPI link */
i = lgw_disconnect();
if (i != LGW_REG_SUCCESS) {
MSG("ERROR: lgw_disconnect() did not return SUCCESS");
return EXIT_FAILURE;
}
MSG("INFO: Exiting Lora concentrator SPI stress-test program\n");
return EXIT_SUCCESS;
}
/* --- EOF ------------------------------------------------------------------ */
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