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/*
/ _____) _ | |
( (____ _____ ____ _| |_ _____ ____| |__
\____ \| ___ | (_ _) ___ |/ ___) _ \
_____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
©2013 Semtech-Cycleo
Description:
Minimum test program for the loragw_spi 'library'
Use logic analyser to check the results.
License: Revised BSD License, see LICENSE.TXT file include in the project
Maintainer: Sylvain Miermont
*/
/* -------------------------------------------------------------------------- */
/* --- DEPENDANCIES --------------------------------------------------------- */
#include <stdint.h>
#include <stdio.h>
#include "loragw_spi.h"
/* -------------------------------------------------------------------------- */
/* --- PRIVATE MACROS ------------------------------------------------------- */
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
/* -------------------------------------------------------------------------- */
/* --- PRIVATE CONSTANTS ---------------------------------------------------- */
#define BURST_TEST_SIZE 2500 /* >> LGW_BURST_CHUNK */
#define TIMING_REPEAT 1 /* repeat transactions multiple times for timing characterisation */
/* -------------------------------------------------------------------------- */
/* --- MAIN FUNCTION -------------------------------------------------------- */
int main()
{
int i;
void *spi_target = NULL;
uint8_t data = 0;
uint8_t dataout[BURST_TEST_SIZE];
uint8_t datain[BURST_TEST_SIZE];
for (i = 0; i < BURST_TEST_SIZE; ++i) {
dataout[i] = 0x30 + (i % 10); /* ASCCI code for 0 -> 9 */
datain[i] = 0x23; /* garbage data, to be overwritten by received data */
}
printf("Beginning of test for loragw_spi.c\n");
lgw_spi_open(&spi_target);
/* normal R/W test */
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_w(spi_target, 0xAA, 0x96);
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_r(spi_target, 0x55, &data);
/* burst R/W test, small bursts << LGW_BURST_CHUNK */
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_wb(spi_target, 0x55, dataout, 16);
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_rb(spi_target, 0x55, datain, 16);
/* burst R/W test, large bursts >> LGW_BURST_CHUNK */
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_wb(spi_target, 0x5A, dataout, ARRAY_SIZE(dataout));
for (i = 0; i < TIMING_REPEAT; ++i)
lgw_spi_rb(spi_target, 0x5A, datain, ARRAY_SIZE(datain));
/* last read (blocking), just to be sure no to quit before the FTDI buffer is flushed */
lgw_spi_r(spi_target, 0x55, &data);
printf("data received (simple read): %d\n",data);
lgw_spi_close(spi_target);
printf("End of test for loragw_spi.c\n");
return 0;
}
/* --- EOF ------------------------------------------------------------------ */
|
