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Added randomization. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@14406 27425a3e-05d8-49a3-a47f-9c15f0e5edd8
This commit is contained in:
Giovanni Di Sirio 2021-05-21 10:14:57 +00:00
parent 282cbaad2e
commit 35621dd185
2 changed files with 16 additions and 2 deletions
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16
testrt/VT_STORM/source/vt_storm.c
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@ -135,6 +135,20 @@ static void continuous_cb(virtual_timer_t *vtp, void *p) {
(void)vtp; (void)vtp;
(void)p; (void)p;
vtcus++; vtcus++;
#if VT_STORM_CFG_RANDOMIZE != FALSE
/* Pseudo-random delay.*/
{
static volatile unsigned x = 0;
unsigned r;
chSysLockFromISR();
r = rand() & 255;
chSysUnlockFromISR();
while (r--)
x++;
}
#endif
} }
/*===========================================================================*/ /*===========================================================================*/
@ -227,7 +241,7 @@ void vt_storm_execute(const vt_storm_config_t *cfg) {
palToggleLine(config->line); palToggleLine(config->line);
chprintf(cfg->out, "."); chprintf(cfg->out, ".");
delay--; delay--;
} while (delay >= 10); } while (delay >= 5);
if (saturated) { if (saturated) {
chprintf(cfg->out, "\r\nSaturated at %u uS", TIME_I2US(delay)); chprintf(cfg->out, "\r\nSaturated at %u uS", TIME_I2US(delay));

2
testrt/VT_STORM/source/vt_storm.h
View File

@ -41,7 +41,7 @@
* @brief Timings randomization. * @brief Timings randomization.
*/ */
#if !defined(VT_STORM_CFG_RANDOMIZE) || defined(__DOXYGEN__) #if !defined(VT_STORM_CFG_RANDOMIZE) || defined(__DOXYGEN__)
#define VT_STORM_CFG_RANDOMIZE FALSE #define VT_STORM_CFG_RANDOMIZE TRUE
#endif #endif
/** /**