make delay before cyw43 initialization a compile-time constant

Author: bablokb

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 := \

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

ports/raspberrypi/supervisor/port.c

@@ -43,6 +43,7 @@
 #include "src/rp2_common/hardware_sync/include/hardware/sync.h"
 #include "src/rp2_common/hardware_timer/include/hardware/timer.h"
 #if CIRCUITPY_CYW43
+#include "py/mphal.h"
 #include "pico/cyw43_arch.h"
 #endif
 #include "src/common/pico_time/include/pico/time.h"
@@ -360,7 +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)