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minor adaptations to timings

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iceman1001 2022-12-09 07:37:37 +01:00
commit 4c9c0b5264
1 changed files with 6 additions and 4 deletions
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10
armsrc/i2c.c
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@ -167,7 +167,7 @@ static bool WaitSCL_H_delay(uint32_t delay) {
// 5000 * 3.07us = 15350us. 15.35ms // 5000 * 3.07us = 15350us. 15.35ms
// 15000 * 3.07us = 46050us. 46.05ms // 15000 * 3.07us = 46050us. 46.05ms
static bool WaitSCL_H(void) { static bool WaitSCL_H(void) {
return WaitSCL_H_delay(15000); return WaitSCL_H_delay(5000);
} }
static bool WaitSCL_L_delay(uint32_t delay) { static bool WaitSCL_L_delay(uint32_t delay) {
@ -179,19 +179,21 @@ static bool WaitSCL_L_delay(uint32_t delay) {
} }
return false; return false;
} }
// 5000 * 3.07us = 15350us. 15.35ms // 5000 * 3.07us = 15350us. 15.35ms
// 15000 * 3.07us = 46050us. 46.05ms
static bool WaitSCL_L(void) { static bool WaitSCL_L(void) {
return WaitSCL_L_delay(15000); return WaitSCL_L_delay(5000);
} }
// Wait max 1800ms or until SCL goes LOW. // Wait max 1800ms or until SCL goes LOW.
// It timeout reading response from card // It timeout reading response from card
// Which ever comes first // Which ever comes first
static bool WaitSCL_L_timeout(void) { static bool WaitSCL_L_timeout(void) {
volatile uint32_t delay = 1700; volatile uint32_t delay = 200;
while (delay--) { while (delay--) {
// exit on SCL LOW // exit on SCL LOW
if (!SCL_read) if (SCL_read == false)
return true; return true;
WaitMS(1); WaitMS(1);