tests: pwm_tach: rand_cycles needs to be divisible by 256.

The number of cycles must be divisible by 256 in order to obtain an accurate PWM frequency for the loopback test. Signed-off-by: Billy Tsai <[email protected]> Change-Id: I1a26f078af38aeaebb9fabc63b272ce5439217f5
AspeedTech-BMC · Jul 18, 2023 · eb189d5 · eb189d5
1 parent b46e590
commit eb189d5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tests/boards/ast1030/src/pwm_tach.c b/tests/boards/ast1030/src/pwm_tach.c
@@ -72,7 +72,7 @@ void test_pwm_tach_loopback_accurate(void)
 
 			div_l = sys_rand32_get() % 256;
 			div_h = sys_rand32_get() % 4;
-			rand_cycles = BIT(div_h) * (div_l + 1);
+			rand_cycles = BIT(div_h) * (div_l + 1) * 256;
 			if (rand_cycles < 2) {
 				rand_cycles = 2;
 			}