Parametric test size, add delay option between write and read

diff --git a/examples/headless/main.c b/examples/headless/main.c
index 14cbfb79d9877238652e106b0e8c01764adff4f0..4c8c664c94524ca6ec367fbec45bfeaa6f141511 100644 (file)
--- a/examples/headless/main.c
+++ b/examples/headless/main.c
@@ -96,13 +96,15 @@ int main(int argc, char *argv[]) {
        struct gramCtx ctx;
        int serial_port, baudrate = 0;
        uint32_t read_value, expected_value;
-       uint32_t pattern[128];
+       const size_t kPatternSize = 512;
+       uint32_t pattern[kPatternSize];
        const int kDumpWidth = 8;
        size_t i;
+       int delay;
 
        struct gramProfile profile = {0,0};
 
-       if (argc != 3) {
+       if (argc < 3) {
                fprintf(stderr, "Usage: %s port baudrate\n", argv[0]);
                return EXIT_FAILURE;
        }
@@ -123,7 +125,7 @@ int main(int argc, char *argv[]) {
        printf("done\n");
 
        srand(time(NULL));
-       for (i = 0; i < 128; i++) {
+       for (i = 0; i < kPatternSize; i++) {
                pattern[i] = rand();
        }
 
@@ -131,13 +133,21 @@ int main(int argc, char *argv[]) {
        volatile uint32_t ddr_base = 0x10000000;
 
        printf("Writing data sequence...");
-       for (i = 0; i < 128; i++) {
+       for (i = 0; i < kPatternSize; i++) {
                gram_write(&ctx, ddr_base+4*i, pattern[i]);
        }
        printf("done\n");
 
+       if (argc >= 4) {
+               sscanf(argv[3], "%d", &delay);
+               printf("waiting for %d second(s)...", delay);
+               fflush(stdout);
+               sleep(delay);
+               printf("done\n");
+       }
+
        printf("Reading data sequence...\n");
-       for (i = 0; i < 128; i++) {
+       for (i = 0; i < kPatternSize; i++) {
                if ((i % kDumpWidth) == 0) {
                        printf("%08x | ", ddr_base+4*i);
                }