benchmark: initialize data with deterministic pattern

1 files changed, 6 insertions, 1 deletions

diff --git a/usb-benchmark-project/benchm_drv.c b/usb-benchmark-project/benchm_drv.c
index c6295f0..ecf2f0c 100644
--- a/usb-benchmark-project/benchm_drv.c
+++ b/usb-benchmark-project/benchm_drv.c
@@ -30,7 +30,7 @@ void benchmark_drv_init(void)
 	USBD_Init();
 }
 
-const uint8_t test_data[2048];
+static uint8_t test_data[8192];
 
 static void wr_compl_cb(void *arg, unsigned char status, unsigned int transferred, unsigned int remain)
 {
@@ -47,5 +47,10 @@ static void wr_compl_cb(void *arg, unsigned char status, unsigned int transferre
 
 void benchmark_start(uint8_t epnr)
 {
+	int i;
+
+	for (i = 0; i < sizeof(test_data); i++)
+		test_data[i] = i & 0xff;
+
 	USBD_Write(epnr, &test_data, sizeof(test_data), wr_compl_cb, epnr);
 }