feat(api-demo): Add dual-core stuff

hw-tests/api-demo/flash.gdb

+source ../../.gdbinit
+
+set confirm off
+
+echo Loading core1 image ...
+file ../../build/hw-tests/api-demo/api-demo-core1.elf
+load
+echo Loading core0 image ...
+file ../../build/hw-tests/api-demo/api-demo-core0.elf
+load
+
+reset
+quit

hw-tests/api-demo/main.c

@@ -5,6 +5,16 @@
 #include "card10.h"
 #include "tmr_utils.h"
 
+void Core1_Start(void) {
+    //MXC_GCR->gp0 = (uint32_t)(&__isr_vector_core1);
+    MXC_GCR->gp0 = 0x10040000;
+    MXC_GCR->perckcn1 &= ~MXC_F_GCR_PERCKCN1_CPU1;
+}
+
+void Core1_Stop(void) {
+    MXC_GCR->perckcn1 |= MXC_F_GCR_PERCKCN1_CPU1;
+}
+
 int main(void)
 {
     int count = 0;

hw-tests/api-demo/meson.build

-name = 'api-demo'
+name = 'api-demo-core0'
 
 executable(
   name + '.elf',
   'main.c',
-  dependencies: [libcard10, max32665_startup],
-  link_whole: [max32665_startup_lib, board_card10_lib],
+  dependencies: [libcard10, max32665_startup_core0],
+  link_whole: [max32665_startup_core0_lib, board_card10_lib],
+  link_args: [
+    '-Wl,-Map=' + meson.current_build_dir() + '/' + name + '.map',
+  ],
+)
+
+name = 'api-demo-core1'
+
+executable(
+  name + '.elf',
+  'test-payload.c',
+  dependencies: [libcard10, max32665_startup_core1],
+  link_whole: [max32665_startup_core1_lib, board_card10_lib],
   link_args: [
     '-Wl,-Map=' + meson.current_build_dir() + '/' + name + '.map',
   ],

hw-tests/api-demo/test-payload.c

+#include "board.h"
+#include "gpio.h"
+#include "mxc_delay.h"
+
+static const gpio_cfg_t motor_pin = {PORT_0, PIN_8, GPIO_FUNC_OUT, GPIO_PAD_NONE};
+
+int main(void)
+{
+	// Enable rxev on core1
+	MXC_GCR->evten |= 0x20;
+	for (int i = 0; 1; i++) {
+		__asm volatile("wfe");
+		printf("core1: Hello! %d\n", i);
+
+#if 0
+		GPIO_OutSet(&motor_pin);
+		mxc_delay(30000);
+		GPIO_OutClr(&motor_pin);
+#endif
+	}
+}