Paul Paterson / mbed-src-CanNucleoF0

mbed library sources, include can_api for nucleo-f091rc

Dependents:   CanNucleoF0_example

Fork of mbed-src by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32610/pinmap.c@645:13c87cbecd54, 2016-01-07 (annotated)

Committer:
ptpaterson
Date:
Thu Jan 07 05:49:05 2016 +0000
Revision:
645:13c87cbecd54
Parent:
507:d4fc7603a669 
corrected freeze on CAN_RECEIVE_IT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 507:d4fc7603a669 1 /*******************************************************************************
mbed_official 507:d4fc7603a669 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
mbed_official 507:d4fc7603a669 3 *
mbed_official 507:d4fc7603a669 4 * Permission is hereby granted, free of charge, to any person obtaining a
mbed_official 507:d4fc7603a669 5 * copy of this software and associated documentation files (the "Software"),
mbed_official 507:d4fc7603a669 6 * to deal in the Software without restriction, including without limitation
mbed_official 507:d4fc7603a669 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
mbed_official 507:d4fc7603a669 8 * and/or sell copies of the Software, and to permit persons to whom the
mbed_official 507:d4fc7603a669 9 * Software is furnished to do so, subject to the following conditions:
mbed_official 507:d4fc7603a669 10 *
mbed_official 507:d4fc7603a669 11 * The above copyright notice and this permission notice shall be included
mbed_official 507:d4fc7603a669 12 * in all copies or substantial portions of the Software.
mbed_official 507:d4fc7603a669 13 *
mbed_official 507:d4fc7603a669 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
mbed_official 507:d4fc7603a669 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed_official 507:d4fc7603a669 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed_official 507:d4fc7603a669 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
mbed_official 507:d4fc7603a669 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
mbed_official 507:d4fc7603a669 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
mbed_official 507:d4fc7603a669 20 * OTHER DEALINGS IN THE SOFTWARE.
mbed_official 507:d4fc7603a669 21 *
mbed_official 507:d4fc7603a669 22 * Except as contained in this notice, the name of Maxim Integrated
mbed_official 507:d4fc7603a669 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
mbed_official 507:d4fc7603a669 24 * Products, Inc. Branding Policy.
mbed_official 507:d4fc7603a669 25 *
mbed_official 507:d4fc7603a669 26 * The mere transfer of this software does not imply any licenses
mbed_official 507:d4fc7603a669 27 * of trade secrets, proprietary technology, copyrights, patents,
mbed_official 507:d4fc7603a669 28 * trademarks, maskwork rights, or any other form of intellectual
mbed_official 507:d4fc7603a669 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
mbed_official 507:d4fc7603a669 30 * ownership rights.
mbed_official 507:d4fc7603a669 31 *******************************************************************************
mbed_official 507:d4fc7603a669 32 */
mbed_official 507:d4fc7603a669 33
mbed_official 507:d4fc7603a669 34 #include "mbed_assert.h"
mbed_official 507:d4fc7603a669 35 #include "pinmap.h"
mbed_official 507:d4fc7603a669 36 #include "objects.h"
mbed_official 507:d4fc7603a669 37 #include "gpio_regs.h"
mbed_official 507:d4fc7603a669 38 #include "ioman_regs.h"
mbed_official 507:d4fc7603a669 39
mbed_official 507:d4fc7603a669 40 void pin_function(PinName name, int function)
mbed_official 507:d4fc7603a669 41 {
mbed_official 507:d4fc7603a669 42 MBED_ASSERT(name != (PinName)NC);
mbed_official 507:d4fc7603a669 43
mbed_official 507:d4fc7603a669 44 if ((function >= 0) && (function <= 0xF)) {
mbed_official 507:d4fc7603a669 45 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 507:d4fc7603a669 46 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 507:d4fc7603a669 47 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
mbed_official 507:d4fc7603a669 48 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
mbed_official 507:d4fc7603a669 49 } else {
mbed_official 507:d4fc7603a669 50 /* Assume this is a pointer to a pin function object */
mbed_official 507:d4fc7603a669 51 pin_function_t *obj = (pin_function_t*)function;
mbed_official 507:d4fc7603a669 52
mbed_official 507:d4fc7603a669 53 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
mbed_official 507:d4fc7603a669 54 /* Request pin mapping */
mbed_official 507:d4fc7603a669 55 *obj->reg_req |= obj->req_val;
mbed_official 507:d4fc7603a669 56
mbed_official 507:d4fc7603a669 57 /* Check for acknowledgment */
mbed_official 507:d4fc7603a669 58 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
mbed_official 507:d4fc7603a669 59 }
mbed_official 507:d4fc7603a669 60 }
mbed_official 507:d4fc7603a669 61 }
mbed_official 507:d4fc7603a669 62
mbed_official 507:d4fc7603a669 63 void pin_mode(PinName name, PinMode mode)
mbed_official 507:d4fc7603a669 64 {
mbed_official 507:d4fc7603a669 65 MBED_ASSERT(name != (PinName)NC);
mbed_official 507:d4fc7603a669 66 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 507:d4fc7603a669 67 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 507:d4fc7603a669 68
mbed_official 507:d4fc7603a669 69 /* Must set mode while retaining direction */
mbed_official 507:d4fc7603a669 70
mbed_official 507:d4fc7603a669 71 /* Get the current direction */
mbed_official 507:d4fc7603a669 72 uint32_t out_mode = MXC_GPIO->out_mode[port];
mbed_official 507:d4fc7603a669 73 uint32_t curr_mode = (out_mode >> (pin*4)) & 0xF;
mbed_official 507:d4fc7603a669 74 PinDirection dir = PIN_OUTPUT;
mbed_official 507:d4fc7603a669 75 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) || (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z)) {
mbed_official 507:d4fc7603a669 76 dir = PIN_INPUT;
mbed_official 507:d4fc7603a669 77 }
mbed_official 507:d4fc7603a669 78
mbed_official 507:d4fc7603a669 79 /* Set mode based on current direction */
mbed_official 507:d4fc7603a669 80 uint32_t new_mode;
mbed_official 507:d4fc7603a669 81 if (dir == PIN_OUTPUT) {
mbed_official 507:d4fc7603a669 82 // PullUp = not valid,
mbed_official 507:d4fc7603a669 83 // OpenDrain = MXC_V_GPIO_OUT_MODE_OD,
mbed_official 507:d4fc7603a669 84 // PullNone = MXC_V_GPIO_OUT_MODE_NORMAL,
mbed_official 507:d4fc7603a669 85 if (mode == OpenDrain) {
mbed_official 507:d4fc7603a669 86 new_mode = MXC_V_GPIO_OUT_MODE_OPEN_DRAIN;
mbed_official 507:d4fc7603a669 87 } else {
mbed_official 507:d4fc7603a669 88 new_mode = MXC_V_GPIO_OUT_MODE_NORMAL_DRIVE;
mbed_official 507:d4fc7603a669 89 }
mbed_official 507:d4fc7603a669 90 } else {
mbed_official 507:d4fc7603a669 91 // PullUp = MXC_V_GPIO_OUT_MODE_HIZPU,
mbed_official 507:d4fc7603a669 92 // OpenDrain = not valid,
mbed_official 507:d4fc7603a669 93 // PullNone = MXC_V_GPIO_OUT_MODE_HIZ,
mbed_official 507:d4fc7603a669 94 if (mode == PullUp) {
mbed_official 507:d4fc7603a669 95 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP;
mbed_official 507:d4fc7603a669 96 } else {
mbed_official 507:d4fc7603a669 97 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z;
mbed_official 507:d4fc7603a669 98 }
mbed_official 507:d4fc7603a669 99 }
mbed_official 507:d4fc7603a669 100
mbed_official 507:d4fc7603a669 101 /* Set new mode */
mbed_official 507:d4fc7603a669 102 out_mode &= ~(0xF << (pin*4));
mbed_official 507:d4fc7603a669 103 out_mode |= (new_mode << (pin*4));
mbed_official 507:d4fc7603a669 104 MXC_GPIO->out_mode[port] = out_mode;
mbed_official 507:d4fc7603a669 105 }