Diff: targets/TARGET_Maxim/TARGET_MAX32620C/pinmap.c

Revision:

186:707f6e361f3e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Maxim/TARGET_MAX32620C/pinmap.c	Fri Jun 22 16:45:37 2018 +0100
@@ -0,0 +1,81 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#include "mbed_assert.h"
+#include "pinmap.h"
+#include "objects.h"
+#include "gpio_regs.h"
+
+void pin_function(PinName name, int function)
+{
+    MBED_ASSERT(name != (PinName)NC);
+
+    if ((function >= 0) && (function <= 0xF)) {
+        unsigned int port = PINNAME_TO_PORT(name);
+        unsigned int pin = PINNAME_TO_PIN(name);
+        uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
+        MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
+    } else {
+        /* Assume this is a pointer to a pin function object */
+        pin_function_t *obj = (pin_function_t*)function;
+
+        if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
+            /* Request pin mapping */
+            *obj->reg_req |= obj->req_val;
+
+            /* Check for acknowledgment */
+            MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
+        }
+    }
+}
+
+void pin_mode(PinName name, PinMode mode)
+{
+    MBED_ASSERT(name != (PinName)NC);
+    unsigned int port = PINNAME_TO_PORT(name);
+    unsigned int pin = PINNAME_TO_PIN(name);
+
+    /* Must set mode while retaining direction */
+
+    /* Get the current direction */
+    uint32_t curr_mode = (MXC_GPIO->out_mode[port] >> (pin * 4)) & 0xF;
+    PinDirection direction = PIN_OUTPUT;
+    if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
+        (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
+        (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
+        direction = PIN_INPUT;
+    }
+
+    /* Set mode based on current direction */
+    pin_dir_mode(name, direction, mode);
+}