Revision 0:65bda25808e4, committed 2017-05-23

Comitter:

switches

Date:

Tue May 23 00:12:03 2017 +0000

Commit message:

New library for the max32625pico board

Changed in this revision

diff -r 000000000000 -r 65bda25808e4 max32625pico.cpp
--- /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;
+}

diff -r 000000000000 -r 65bda25808e4 max32625pico.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max32625pico.h	Tue May 23 00:12:03 2017 +0000
@@ -0,0 +1,147 @@
+/*******************************************************************************
+ * 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.
+ *******************************************************************************
+ */
+
+#ifndef _MAX32625PICO_H_
+#define _MAX32625PICO_H_
+
+#include "mbed.h"
+
+/**
+ * @brief MAX32625PICO Board Support Library
+ *
+ * @details The MAX32625PICO is a rapid development application board for
+ * ultra low power wearable applications.  It includes common peripherals and
+ * expansion connectors all power optimized for getting the longest life from
+ * the battery.  This library configures the power and I/O for the board.
+ * <br>https://www.maximintegrated.com/MAX32625PICO
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "max32625pico.h"
+ *
+ * DigitalOut led1(LED1);
+ * MAX32625PICO pico(MAX32625PICO::IOH_SWD_IN, MAX32625PICO::VIO_1V8, MAX32625PICO::VIO_IOH);
+ *
+ * // main() runs in its own thread in the OS
+ * // (note the calls to Thread::wait below for delays)
+ * int main()
+ * {
+ *     // initialize power and I/O on MAX32625PICO board
+ *     pico.init();
+ *
+ *     while (true) {
+ *         led1 = !led1;
+ *         Thread::wait(500);
+ *     }
+ * }
+ * @endcode
+ */
+class MAX32625PICO
+{
+public:
+// MAX32625PICO configuration utilities
+
+    /**
+      * @brief   IO Voltage
+      * @details Enumerated options for operating voltage
+      */
+    typedef enum {
+        VIO_1V8 = 0x00,    ///< 1.8V IO (local)
+        VIO_IOH = 0x01,    ///< Use VDDIOH (from DIP pin 1, or SWD pin1, or local 3.3V)
+    } vio_t;
+
+    /**
+      * @brief   VDDIOH Mode
+      * @details Enumerated options for VDDIOH configuration mode
+      */
+    typedef enum {
+        IOH_OFF = 0x00,     ///< No connections to VDDIOH
+        IOH_DIP_IN = 0x02,  ///< VDDIOH input from DIP pin 1
+        IOH_SWD_IN = 0x03,  ///< VDDIOH input from SWD pin 1
+        IOH_3V3 = 0x04,     ///< VDDIOH = 3.3V from local supply
+        IOH_DIP_OUT = 0x06, ///< VDDIOH = 3.3V output to DIP pin 1
+        IOH_SWD_OUT = 0x07, ///< VDDIOH = 3.3V output to SWD pin 1
+    } vddioh_mode_t;
+
+    /**
+        * MAX32625PICO constructor.
+        *
+        */
+    MAX32625PICO();
+
+    /**
+        * MAX32625PICO constructor.
+        *
+        */
+    MAX32625PICO(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio);
+
+    /**
+        * MAX32625PICO destructor.
+        */
+    ~MAX32625PICO();
+
+    /**
+     * @brief   Initialize MAX32625PICO board
+     * @details Initializes PMIC and I/O on MAX32625PICO board.
+     *  Configures PMIC to enable LDO2 and LDO3 at 3.3V.
+     *  Disables resisitive pulldown on MON(AIN_0)
+     *  Sets default I/O voltages to 3V3 for micro SD card.
+     *  Sets I/O voltage for header pins to hdrVio specified.
+     * @param iohMode Configuration mode for VDDIOH
+     * @param dipVio I/O voltage for DIP pins
+     * @param swdVio I/O voltage for SWD pins
+     * @returns 0 if no errors, -1 if error.
+    */
+    int init(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio);
+
+    /**
+     * @brief   Sets I/O Voltage
+     * @details Sets the voltage rail to be used for a given pin.
+     *  VIO_1V8 selects VDDIO which is supplied 1.8V locally,
+     *  VIO_IOH selects VDDIOH which is supplied externally or from the 3.3V supply/
+     * @param   pin Pin whose voltage supply is being assigned.
+     * @param   vio Voltage rail to be used for specified pin.
+     * @returns 0 if no errors, -1 if error.
+    */
+    int vddioh(PinName pin, vio_t vio);
+
+    /// Digital output controlling local 3.3V IOH supply
+    DigitalOut en3V3;
+    /// Digital output controlling external IOH supply
+    DigitalOut enIOH;
+    /// Digital output selecting external IOH supply
+    DigitalOut selSWD;
+
+};
+
+#endif /* _MAX32625PICO_H_ */