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apps/examples: Add path option to SPI Slave test #3467

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6 changes: 6 additions & 0 deletions examples/spislv_test/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,12 @@ config EXAMPLES_SPISLV

if EXAMPLES_SPISLV

config EXAMPLES_SPISLV_DEFAULT_PATH
string "Default SPI Slave device path"
default "/dev/spislv0"
---help---
Default path for SPI Slave device

config EXAMPLES_SPISLV_PROGNAME
string "Program name"
default "spislv"
Expand Down
84 changes: 50 additions & 34 deletions examples/spislv_test/spislv_test.c
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Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,7 @@
/* Define buffer sizes */
#define RX_BUFFER_SIZE 64
#define TX_BUFFER_SIZE 64
#define SOURCE_FILE "dev/spislv2" /* SPI device path */
#define DEFAULT_SPI_PATH CONFIG_EXAMPLES_SPISLV_DEFAULT_PATH

/* Enumeration for operation modes */

Expand All @@ -61,13 +61,41 @@ typedef struct
operation_mode_t mode;
int num_bytes; /* Applicable for write mode */
int timeout_seconds; /* Applicable for all modes */
const char *spi_path; /* SPI slave device path */
unsigned char tx_buffer[TX_BUFFER_SIZE];
} program_config_t;

/****************************************************************************
* Private Functions
****************************************************************************/

static void print_usage(const char *progname)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s -x <num_bytes> [-p <path>] [-t <sec>] <hex_bytes>\n",
progname);
fprintf(stderr, " %s -l [-p <path>] [-t <sec>]\n", progname);
fprintf(stderr, " %s -e [-p <path>] [-t <sec>]\n", progname);
fprintf(stderr, "\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, " -p SPI slave device path [default: %s]\n",
DEFAULT_SPI_PATH);
fprintf(stderr,
" -t Timeout in seconds [default: 10]\n");
fprintf(stderr,
" -x Number of bytes to queue <hex_bytes>\n");
fprintf(stderr,
" -l Only listen for data from the master\n");
fprintf(stderr,
" -e Echo received data back to the master\n");
fprintf(stderr, "\n");
fprintf(stderr, "Examples:\n");
fprintf(stderr, " %s -x 2 abba\n", progname);
fprintf(stderr, " %s -l -t 5\n", progname);
fprintf(stderr, " %s -e -t 10\n", progname);
fprintf(stderr, " %s -p /dev/spislv2 -l\n", progname);
}

/**
* @brief Converts a single hexadecimal character to its byte value.
*
Expand Down Expand Up @@ -148,13 +176,25 @@ static int parse_arguments(int argc, char *argv[],
config->mode = MODE_INVALID;
config->num_bytes = 0;
config->timeout_seconds = 10; /* Default timeout */
config->spi_path = DEFAULT_SPI_PATH;

/* Parse command-line options */

while ((opt = getopt(argc, argv, "x:t:le")) != -1)
while ((opt = getopt(argc, argv, "p:x:t:le")) != -1)
{
switch (opt)
{
case 'p':
if (optarg[0] == '\0')
{
fprintf(stderr,
"Error: SPI device path (-p) must not be empty.\n");
return -1;
}

config->spi_path = optarg;
break;

case 'x':
if (config->mode != MODE_INVALID)
{
Expand Down Expand Up @@ -208,18 +248,7 @@ static int parse_arguments(int argc, char *argv[],
break;

default:
fprintf(stderr, "Usage:\n");
fprintf(stderr,
" %s -x <num_bytes> [-t <timeout_seconds>] <hex_bytes>\n",
argv[0]);
fprintf(stderr,
" %s -l [-t <timeout_seconds>]\n", argv[0]);
fprintf(stderr,
" %s -e [-t <timeout_seconds>]\n", argv[0]);
printf("Examples:\n");
printf(" spislv -x 2 abba\n");
printf(" spislv -l -t 5\n");
printf(" spislv -e -t 10\n\n");
print_usage(argv[0]);
return -1;
}
}
Expand All @@ -232,9 +261,7 @@ static int parse_arguments(int argc, char *argv[],
{
fprintf(stderr,
"Error: Missing hexadecimal bytes to send.\n");
fprintf(stderr,
"Usage: %s -x <num_bytes> [-t <timeout_seconds>] <hex_bytes>\n",
argv[0]);
print_usage(argv[0]);
return -1;
}

Expand Down Expand Up @@ -265,18 +292,7 @@ static int parse_arguments(int argc, char *argv[],
else if (config->mode == MODE_INVALID)
{
fprintf(stderr, "Error: No operation mode specified.\n");
fprintf(stderr, "Usage:\n");
fprintf(stderr,
" %s -x <num_bytes> [-t <timeout_seconds>] <hex_bytes>\n",
argv[0]);
fprintf(stderr,
" %s -l [-t <timeout_seconds>]\n", argv[0]);
fprintf(stderr,
" %s -e [-t <timeout_seconds>]\n", argv[0]);
printf("Examples:\n");
printf(" spislv -x 2 abba\n");
printf(" spislv -l -t 5\n");
printf(" spislv -e -t 10\n");
print_usage(argv[0]);
return -1;
}

Expand Down Expand Up @@ -320,7 +336,7 @@ static int write_mode(program_config_t *config, int fd)
if (bytes_written < 0)
{
fprintf(stderr, "Error: Failed to write to %s: %s\n",
SOURCE_FILE, strerror(errno));
config->spi_path, strerror(errno));
return -1;
}

Expand Down Expand Up @@ -426,7 +442,7 @@ static int read_with_timeout(program_config_t *config, int fd)
if (bytes_read < 0)
{
fprintf(stderr, "Error: Failed to read from %s: %s\n",
SOURCE_FILE, strerror(errno));
config->spi_path, strerror(errno));
return -1;
}

Expand All @@ -453,7 +469,7 @@ static int read_with_timeout(program_config_t *config, int fd)
{
fprintf(stderr,
"Error: Failed to write to %s: %s\n",
SOURCE_FILE, strerror(errno));
config->spi_path, strerror(errno));
return -1;
}
else if (bytes_written != bytes_read)
Expand Down Expand Up @@ -503,11 +519,11 @@ int main(int argc, char *argv[])
return -1;
}

fd = open(SOURCE_FILE, O_RDWR);
fd = open(config.spi_path, O_RDWR);
if (fd < 0)
{
fprintf(stderr, "Error: Failed to open %s: %s\n",
SOURCE_FILE, strerror(errno));
config.spi_path, strerror(errno));
return -1;
}

Expand Down
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