Make is_boot_pin_asserted() always return false. No need to ever check the boot pin because the bootloader is to be triggered by other means.

mondalaci · mondalaci · commit ec456b9582cc · 2017-10-16T18:04:34.000+02:00
diff --git a/targets/MK22F51212/src/hardware_init_K22F512.c b/targets/MK22F51212/src/hardware_init_K22F512.c
@@ -138,6 +138,7 @@ uint32_t get_uart_clock(uint32_t instance)
 
 bool is_boot_pin_asserted(void)
 {
+    return false;
 #ifdef BL_TARGET_FLASH
     // Initialize boot pin for GPIO
     BOOT_PIN_PORT->PCR[BOOT_PIN_NUMBER] |= PORT_PCR_MUX(BOOT_PIN_ALT_MODE);

Original file line number	Diff line number	Diff line change
`@@ -138,6 +138,7 @@ uint32_t get_uart_clock(uint32_t instance)`
`138`	`138`
`139`	`139`	`bool is_boot_pin_asserted(void)`
`140`	`140`	`{`
	`141`	`+ return false;`
`141`	`142`	`#ifdef BL_TARGET_FLASH`
`142`	`143`	`// Initialize boot pin for GPIO`
`143`	`144`	`BOOT_PIN_PORT->PCR[BOOT_PIN_NUMBER] \|= PORT_PCR_MUX(BOOT_PIN_ALT_MODE);`