Greg Steiert / max32625pico

Library for MAX32625PICO board. Configures IOH supply and I/O voltage rails.

Dependents:   MAX34417_demo BER_Board PICO_board_demo_copy PICO_board_demo ... more

max32625pico.cpp@0:65bda25808e4, 2017-05-23 (annotated)

Committer:
switches
Date:
Tue May 23 00:12:03 2017 +0000
Revision:
0:65bda25808e4
New library for the max32625pico board

Who changed what in which revision?

UserRevisionLine numberNew contents of line
switches 0:65bda25808e4 1 /*******************************************************************************
switches 0:65bda25808e4 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
switches 0:65bda25808e4 3 *
switches 0:65bda25808e4 4 * Permission is hereby granted, free of charge, to any person obtaining a
switches 0:65bda25808e4 5 * copy of this software and associated documentation files (the "Software"),
switches 0:65bda25808e4 6 * to deal in the Software without restriction, including without limitation
switches 0:65bda25808e4 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
switches 0:65bda25808e4 8 * and/or sell copies of the Software, and to permit persons to whom the
switches 0:65bda25808e4 9 * Software is furnished to do so, subject to the following conditions:
switches 0:65bda25808e4 10 *
switches 0:65bda25808e4 11 * The above copyright notice and this permission notice shall be included
switches 0:65bda25808e4 12 * in all copies or substantial portions of the Software.
switches 0:65bda25808e4 13 *
switches 0:65bda25808e4 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
switches 0:65bda25808e4 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
switches 0:65bda25808e4 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
switches 0:65bda25808e4 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
switches 0:65bda25808e4 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
switches 0:65bda25808e4 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
switches 0:65bda25808e4 20 * OTHER DEALINGS IN THE SOFTWARE.
switches 0:65bda25808e4 21 *
switches 0:65bda25808e4 22 * Except as contained in this notice, the name of Maxim Integrated
switches 0:65bda25808e4 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
switches 0:65bda25808e4 24 * Products, Inc. Branding Policy.
switches 0:65bda25808e4 25 *
switches 0:65bda25808e4 26 * The mere transfer of this software does not imply any licenses
switches 0:65bda25808e4 27 * of trade secrets, proprietary technology, copyrights, patents,
switches 0:65bda25808e4 28 * trademarks, maskwork rights, or any other form of intellectual
switches 0:65bda25808e4 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
switches 0:65bda25808e4 30 * ownership rights.
switches 0:65bda25808e4 31 *******************************************************************************
switches 0:65bda25808e4 32 */
switches 0:65bda25808e4 33
switches 0:65bda25808e4 34 #include "mbed.h"
switches 0:65bda25808e4 35 #include "max32625.h"
switches 0:65bda25808e4 36 #include "ioman_regs.h"
switches 0:65bda25808e4 37 #include "gpio_regs.h"
switches 0:65bda25808e4 38 #include "PinNames.h"
switches 0:65bda25808e4 39 #include "max32625pico.h"
switches 0:65bda25808e4 40
switches 0:65bda25808e4 41 //******************************************************************************
switches 0:65bda25808e4 42 MAX32625PICO::MAX32625PICO() : en3V3(P3_6, 0), enIOH(P2_2, 0), selSWD(P2_3, 0)
switches 0:65bda25808e4 43 {
switches 0:65bda25808e4 44 }
switches 0:65bda25808e4 45
switches 0:65bda25808e4 46 //******************************************************************************
switches 0:65bda25808e4 47 MAX32625PICO::MAX32625PICO(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio) : en3V3(P3_6, 0), enIOH(P2_2, 0), selSWD(P2_3, 0)
switches 0:65bda25808e4 48 {
switches 0:65bda25808e4 49 init(iohMode, dipVio, swdVio);
switches 0:65bda25808e4 50 }
switches 0:65bda25808e4 51
switches 0:65bda25808e4 52 //******************************************************************************
switches 0:65bda25808e4 53 MAX32625PICO::~MAX32625PICO()
switches 0:65bda25808e4 54 {
switches 0:65bda25808e4 55 }
switches 0:65bda25808e4 56
switches 0:65bda25808e4 57 //******************************************************************************
switches 0:65bda25808e4 58 int MAX32625PICO::init(vddioh_mode_t iohMode, vio_t dipVio, vio_t swdVio)
switches 0:65bda25808e4 59 {
switches 0:65bda25808e4 60 // Set LED pins to open drain
switches 0:65bda25808e4 61 uint32_t out_mode = MXC_GPIO->out_mode[2];
switches 0:65bda25808e4 62 out_mode &= ~(0xFFF0000); // Clear modes for bits 4-6
switches 0:65bda25808e4 63 out_mode |= (MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (4 * 4))
switches 0:65bda25808e4 64 |(MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (5 * 4))
switches 0:65bda25808e4 65 |(MXC_V_GPIO_OUT_MODE_OPEN_DRAIN << (6 * 4));
switches 0:65bda25808e4 66 MXC_GPIO->out_mode[2] = out_mode;
switches 0:65bda25808e4 67
switches 0:65bda25808e4 68 en3V3 = 0; // Disable local 3.3V IOH supply by default
switches 0:65bda25808e4 69 enIOH = 0; // Disable external IOH supply by default
switches 0:65bda25808e4 70 selSWD = 0; // Select DIP pins by default
switches 0:65bda25808e4 71
switches 0:65bda25808e4 72
switches 0:65bda25808e4 73 switch (iohMode) {
switches 0:65bda25808e4 74 case IOH_SWD_IN :
switches 0:65bda25808e4 75 selSWD = 1; // Use SWD pins
switches 0:65bda25808e4 76 case IOH_DIP_IN :
switches 0:65bda25808e4 77 enIOH = 1; // Enable external connections
switches 0:65bda25808e4 78 break;
switches 0:65bda25808e4 79 case IOH_SWD_OUT :
switches 0:65bda25808e4 80 selSWD = 1; // Use SWD pins
switches 0:65bda25808e4 81 case IOH_DIP_OUT :
switches 0:65bda25808e4 82 enIOH = 1; // Enable external connections
switches 0:65bda25808e4 83 case IOH_3V3 :
switches 0:65bda25808e4 84 en3V3 = 1; // Enable local 3.3V supply connection to IOH
switches 0:65bda25808e4 85 break;
switches 0:65bda25808e4 86 case IOH_OFF :
switches 0:65bda25808e4 87 default:
switches 0:65bda25808e4 88 break;
switches 0:65bda25808e4 89
switches 0:65bda25808e4 90 }
switches 0:65bda25808e4 91
switches 0:65bda25808e4 92 // Set DIP pin ports to dipVio
switches 0:65bda25808e4 93 vddioh(P0_0, dipVio);
switches 0:65bda25808e4 94 vddioh(P0_1, dipVio);
switches 0:65bda25808e4 95 vddioh(P0_2, dipVio);
switches 0:65bda25808e4 96 vddioh(P0_3, dipVio);
switches 0:65bda25808e4 97 vddioh(P0_4, dipVio);
switches 0:65bda25808e4 98 vddioh(P0_5, dipVio);
switches 0:65bda25808e4 99 vddioh(P0_6, dipVio);
switches 0:65bda25808e4 100 vddioh(P0_7, dipVio);
switches 0:65bda25808e4 101 vddioh(P1_6, dipVio);
switches 0:65bda25808e4 102 vddioh(P1_7, dipVio);
switches 0:65bda25808e4 103 vddioh(P4_4, dipVio);
switches 0:65bda25808e4 104 vddioh(P4_5, dipVio);
switches 0:65bda25808e4 105 vddioh(P4_6, dipVio);
switches 0:65bda25808e4 106 vddioh(P4_7, dipVio);
switches 0:65bda25808e4 107 // Set SWD pin ports to swdVio
switches 0:65bda25808e4 108 vddioh(P3_0, swdVio);
switches 0:65bda25808e4 109 vddioh(P3_1, swdVio);
switches 0:65bda25808e4 110 vddioh(P3_2, swdVio);
switches 0:65bda25808e4 111 vddioh(P3_3, swdVio);
switches 0:65bda25808e4 112 vddioh(P3_4, swdVio);
switches 0:65bda25808e4 113 vddioh(P3_7, swdVio);
switches 0:65bda25808e4 114
switches 0:65bda25808e4 115 // Set 1-Wire port to VDDIOH
switches 0:65bda25808e4 116 vddioh(P4_0, VIO_IOH);
switches 0:65bda25808e4 117 vddioh(P4_1, VIO_IOH);
switches 0:65bda25808e4 118
switches 0:65bda25808e4 119 return 0;
switches 0:65bda25808e4 120 }
switches 0:65bda25808e4 121
switches 0:65bda25808e4 122 //******************************************************************************
switches 0:65bda25808e4 123 int MAX32625PICO::vddioh(PinName pin, vio_t vio)
switches 0:65bda25808e4 124 {
switches 0:65bda25808e4 125 __IO uint32_t *use_vddioh = &((mxc_ioman_regs_t *)MXC_IOMAN)->use_vddioh_0;
switches 0:65bda25808e4 126
switches 0:65bda25808e4 127 if (pin == NOT_CONNECTED) {
switches 0:65bda25808e4 128 return -1;
switches 0:65bda25808e4 129 }
switches 0:65bda25808e4 130
switches 0:65bda25808e4 131 use_vddioh += PINNAME_TO_PORT(pin) >> 2;
switches 0:65bda25808e4 132 if (vio) {
switches 0:65bda25808e4 133 *use_vddioh |= (1 << (PINNAME_TO_PIN(pin) + ((PINNAME_TO_PORT(pin) & 0x3) << 3)));
switches 0:65bda25808e4 134 } else {
switches 0:65bda25808e4 135 *use_vddioh &= ~(1 << (PINNAME_TO_PIN(pin) + ((PINNAME_TO_PORT(pin) & 0x3) << 3)));
switches 0:65bda25808e4 136 }
switches 0:65bda25808e4 137
switches 0:65bda25808e4 138 return 0;
switches 0:65bda25808e4 139 }