Diff: max32625pico.cpp

Revision:

0:65bda25808e4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max32625pico.cpp	Tue May 23 00:12:03 2017 +0000
@@ -0,0 +1,139 @@
+/*******************************************************************************
+ * Copyright (C) 2016 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.h"
+#include "max32625.h"
+#include "ioman_regs.h"
+#include "gpio_regs.h"
+#include "PinNames.h"
+#include "max32625pico.h"
+
+//******************************************************************************
+MAX32625PICO::MAX32625PICO() : en3V3(P3_6, 0), enIOH(P2_2, 0), selSWD(P2_3, 0)
+{
+}
+
+//******************************************************************************
+MAX32625PICO::MAX32625PICO(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio) : en3V3(P3_6, 0), enIOH(P2_2, 0), selSWD(P2_3, 0)
+{
+    init(iohMode, dipVio, swdVio);
+}
+
+//******************************************************************************
+MAX32625PICO::~MAX32625PICO()
+{
+}
+
+//******************************************************************************
+int MAX32625PICO::init(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio)
+{
+    // Set LED pins to open drain
+    uint32_t out_mode = MXC_GPIO->out_mode[2];
+    out_mode &= ~(0xFFF0000);  // Clear modes for bits 4-6
+    out_mode |=  (MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (4 * 4)) 
+                |(MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (5 * 4))
+                |(MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (6 * 4));
+    MXC_GPIO->out_mode[2] = out_mode;
+
+    en3V3 = 0;   // Disable local 3.3V IOH supply by default
+    enIOH = 0;   // Disable external IOH supply by default
+    selSWD = 0;  // Select DIP pins by default
+    
+        
+    switch (iohMode) {
+        case IOH_SWD_IN :
+            selSWD = 1;  // Use SWD pins
+        case IOH_DIP_IN :
+            enIOH = 1;   // Enable external connections
+            break;
+        case IOH_SWD_OUT :
+            selSWD = 1;  // Use SWD pins
+        case IOH_DIP_OUT :
+            enIOH = 1;   // Enable external connections
+        case IOH_3V3 :
+            en3V3 = 1;   // Enable local 3.3V supply connection to IOH
+            break;
+        case IOH_OFF :
+        default:
+            break;
+
+    }
+
+    // Set DIP pin ports to dipVio
+    vddioh(P0_0, dipVio);
+    vddioh(P0_1, dipVio);
+    vddioh(P0_2, dipVio);
+    vddioh(P0_3, dipVio);
+    vddioh(P0_4, dipVio);
+    vddioh(P0_5, dipVio);
+    vddioh(P0_6, dipVio);
+    vddioh(P0_7, dipVio);
+    vddioh(P1_6, dipVio);
+    vddioh(P1_7, dipVio);
+    vddioh(P4_4, dipVio);
+    vddioh(P4_5, dipVio);
+    vddioh(P4_6, dipVio);
+    vddioh(P4_7, dipVio);
+    // Set SWD pin ports to swdVio
+    vddioh(P3_0, swdVio);
+    vddioh(P3_1, swdVio);
+    vddioh(P3_2, swdVio);
+    vddioh(P3_3, swdVio);
+    vddioh(P3_4, swdVio);
+    vddioh(P3_7, swdVio);
+
+    // Set 1-Wire port to VDDIOH
+    vddioh(P4_0, VIO_IOH);
+    vddioh(P4_1, VIO_IOH);
+
+    return 0;
+}
+
+//******************************************************************************
+int MAX32625PICO::vddioh(PinName pin, vio_t vio)
+{
+    __IO uint32_t *use_vddioh = &((mxc_ioman_regs_t *)MXC_IOMAN)->use_vddioh_0;
+
+    if (pin == NOT_CONNECTED) {
+        return -1;
+    }
+
+    use_vddioh += PINNAME_TO_PORT(pin) >> 2;
+    if (vio) {
+        *use_vddioh |= (1 << (PINNAME_TO_PIN(pin) + ((PINNAME_TO_PORT(pin) & 0x3) << 3)));
+    } else {
+        *use_vddioh &= ~(1 << (PINNAME_TO_PIN(pin) + ((PINNAME_TO_PORT(pin) & 0x3) << 3)));
+    }
+
+    return 0;
+}