Optimistic_yield interval changes from PR esp8266#7832, these need intense review.

Author: dok-net

Diff for: cores/esp8266/core_esp8266_i2s.cpp

@@ -313,7 +313,7 @@ static bool _i2s_write_sample(uint32_t sample, bool nb) {
         if (tx->slc_queue_len > 0) {
           break;
         } else {
-          optimistic_yield(10000);
+          optimistic_yield(1000);
         }
       }
     }
@@ -362,7 +362,7 @@ static uint16_t _i2s_write_buffer(const int16_t *frames, uint16_t frame_count, b
                         if (tx->slc_queue_len > 0) {
                           break;
                         } else {
-                          optimistic_yield(10000);
+                          optimistic_yield(1000);
                         }
                     }
                 }
@@ -422,7 +422,7 @@ bool i2s_read_sample(int16_t *left, int16_t *right, bool blocking) {
         if (rx->slc_queue_len > 0){
           break;
         } else {
-          optimistic_yield(10000);
+          optimistic_yield(1000);
         }
       }
     }

Diff for: cores/esp8266/core_esp8266_wiring_pulse.cpp

@@ -31,7 +31,7 @@ extern uint32_t xthal_get_ccount();
         if (xthal_get_ccount() - start_cycle_count > timeout_cycles) { \
             return 0; \
         } \
-        optimistic_yield(5000); \
+        optimistic_yield(1000); \
     }
 
 // max timeout is 27 seconds at 160MHz clock and 54 seconds at 80MHz clock

Diff for: cores/esp8266/flash_hal.cpp

@@ -30,7 +30,7 @@ extern "C" {
 }
 
 int32_t flash_hal_read(uint32_t addr, uint32_t size, uint8_t *dst) {
-    optimistic_yield(10000);
+    optimistic_yield(1000);
 
     // We use flashRead overload that handles proper alignment
     if (ESP.flashRead(addr, dst, size)) {
@@ -41,7 +41,7 @@ int32_t flash_hal_read(uint32_t addr, uint32_t size, uint8_t *dst) {
 }
 
 int32_t flash_hal_write(uint32_t addr, uint32_t size, const uint8_t *src) {
-    optimistic_yield(10000);
+    optimistic_yield(1000);
 
     // We use flashWrite overload that handles proper alignment
     if (ESP.flashWrite(addr, src, size)) {
@@ -60,7 +60,7 @@ int32_t flash_hal_erase(uint32_t addr, uint32_t size) {
     const uint32_t sector = addr / SPI_FLASH_SEC_SIZE;
     const uint32_t sectorCount = size / SPI_FLASH_SEC_SIZE;
     for (uint32_t i = 0; i < sectorCount; ++i) {
-        optimistic_yield(10000);
+        optimistic_yield(1000);
         if (!ESP.flashEraseSector(sector + i)) {
             DEBUGV("_spif_erase addr=%x size=%d i=%d\r\n", addr, size, i);
             return FLASH_HAL_ERASE_ERROR;