Fix arduino pinmap test failing

Author: multiplemonomials

targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/PeripheralPins.c

@@ -312,3 +312,68 @@ const PinMap PinMap_PWM_OUT[] = {
 
     {NC, NC, 0}
 };
+
+/************ GPIO ***************/
+
+// Note that this is only used for testing, so that the test knows what are valid GPIO pins.
+// It's not used in normal usage.
+// Also, only the "pin" field is significant here. Other fields are don't cares.
+
+const PinMap PinMap_GPIO[] = {
+    {IO_0, 0, 0},
+    {IO_1, 0, 0},
+    {IO_2, 0, 0},
+    {IO_3, 0, 0},
+    {IO_4, 0, 0},
+    {IO_5, 0, 0},
+    {IO_6, 0, 0},
+    {IO_7, 0, 0},
+    {IO_8, 0, 0},
+    {IO_9, 0, 0},
+    {IO_10, 0, 0},
+    {IO_11, 0, 0},
+    {IO_12, 0, 0},
+    {IO_13, 0, 0},
+    {IO_14, 0, 0},
+    {IO_15, 0, 0},
+    {IO_16, 0, 0},
+    {IO_17, 0, 0},
+    {IO_18, 0, 0},
+    {IO_19, 0, 0},
+    {IO_20, 0, 0},
+    {IO_21, 0, 0},
+    {IO_22, 0, 0},
+    {IO_23, 0, 0},
+    {IO_24, 0, 0},
+    {IO_25, 0, 0},
+    {IO_26, 0, 0},
+    {IO_27, 0, 0},
+    {IO_28, 0, 0},
+    {IO_29, 0, 0},
+    {IO_39, 0, 0},
+    {IO_40, 0, 0},
+    {IO_41, 0, 0},
+    {IO_44, 0, 0},
+    {IO_47, 0, 0},
+    {IO_48, 0, 0},
+    {IO_49, 0, 0},
+
+    // Apollo3 I/O pins - BGA package only
+    {IO_30, 0, 0},
+    {IO_31, 0, 0},
+    {IO_32, 0, 0},
+    {IO_33, 0, 0},
+    {IO_34, 0, 0},
+    {IO_35, 0, 0},
+    {IO_36, 0, 0},
+    {IO_37, 0, 0},
+    {IO_38, 0, 0},
+    {IO_42, 0, 0},
+    {IO_43, 0, 0},
+    {IO_45, 0, 0},
+    {IO_46, 0, 0},
+
+    {NC, NC, 0}
+};
+
+

targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/PeripheralPins.h

@@ -23,6 +23,7 @@
 #include "pinmap.h"
 #include "PeripheralNames.h"
 
+
 //*** I2C ***
 #if DEVICE_I2C
 extern const PinMap PinMap_I2C_SDA[];
@@ -70,4 +71,6 @@ extern const PinMap PinMap_QSPI_DATA2[];
 extern const PinMap PinMap_QSPI_DATA3[];
 #endif
 
+extern const PinMap PinMap_GPIO[];
+
 #endif

targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/gpio_api.c

@@ -23,6 +23,7 @@
 
 #include "mbed_assert.h"
 #include "gpio_api.h"
+#include "PeripheralPins.h"
 
 /** Set the given pin as GPIO
  *
@@ -224,6 +225,5 @@ int gpio_read(gpio_t *obj)
  */
 const PinMap *gpio_pinmap(void)
 {
-    MBED_ASSERT(false);
-    return NULL;
+    return PinMap_GPIO;
 }