adafruit · jepler · Feb 15, 2025 · Feb 7, 2025 · Feb 15, 2025
diff --git a/ports/raspberrypi/Makefile b/ports/raspberrypi/Makefile
@@ -32,6 +32,7 @@ CFLAGS_CYW43 := \
 	-DCYW43_USE_STATS=0 \
 	-DPICO_BUILD \
 	-DCYW43_ENABLE_BLUETOOTH=0 \
+	-DCIRCUITPY_CYW43_INIT_DELAY=$(CIRCUITPY_CYW43_INIT_DELAY) \
 	-DPICO_CYW43_ARCH_POLL=0
 
 SRC_SDK_CYW43 := \

diff --git a/ports/raspberrypi/mpconfigport.mk b/ports/raspberrypi/mpconfigport.mk
@@ -53,6 +53,9 @@ CIRCUITPY_ALARM ?= 1
 CIRCUITPY_PICODVI ?= 0
 
 CIRCUITPY_TOUCHIO ?= 1
+
+# delay in ms before calling cyw43_arch_init_with_country
+CIRCUITPY_CYW43_INIT_DELAY ?= 1000
 endif
 
 ifeq ($(CHIP_VARIANT),RP2350)
@@ -65,6 +68,9 @@ CIRCUITPY_PICODVI ?= 1
 # So, turn touchio off because it doesn't work.
 CIRCUITPY_TOUCHIO = 0
 
+# delay in ms before calling cyw43_arch_init_with_country
+CIRCUITPY_CYW43_INIT_DELAY ?= 0
+
 # Audio effects
 CIRCUITPY_AUDIOEFFECTS ?= 1
 endif

diff --git a/ports/raspberrypi/supervisor/port.c b/ports/raspberrypi/supervisor/port.c
@@ -361,7 +361,7 @@ safe_mode_t port_init(void) {
     // initializing the cyw43 chip. Delays inside cyw43_arch_init_with_country
     // are intended to meet the power on timing requirements, but apparently
     // are inadequate. We'll back off this long delay based on future testing.
-    mp_hal_delay_ms(1000);
+    mp_hal_delay_ms(CIRCUITPY_CYW43_INIT_DELAY);
 
     // Change this as a placeholder as to how to init with country code.
     // Default country code is CYW43_COUNTRY_WORLDWIDE)