altos/stmf0: Disable ao_boot_check_pin if not in use

This allows rebuilding the boot loader without boot pin support (as
required to debug TeleMini) by only editing ao_pins.h

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/src/stmf0/ao_boot_pin.c b/src/stmf0/ao_boot_pin.c
index b289b80439f9c10399d42715ca0026b6280face5..43212dfd300c0024227bf5fe0e15c80dd3f0d00e 100644 (file)
--- a/src/stmf0/ao_boot_pin.c
+++ b/src/stmf0/ao_boot_pin.c
@@ -20,6 +20,7 @@
 #include <ao_boot.h>
 #include <ao_exti.h>
 
+#if AO_BOOT_PIN
 int
 ao_boot_check_pin(void)
 {
@@ -44,3 +45,4 @@ ao_boot_check_pin(void)
        stm_rcc.apb1enr &= ~(1UL << STM_RCC_APB1ENR_PWREN);
        return v == AO_BOOT_APPLICATION_VALUE;
 }
+#endif