mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Maxim/TARGET_MAX32620C/port_api.c@186:707f6e361f3e, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 16:45:37 2018 +0100
Revision:
186:707f6e361f3e
mbed-dev library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Anna Bridge 186:707f6e361f3e 1 /*******************************************************************************
Anna Bridge 186:707f6e361f3e 2 * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
Anna Bridge 186:707f6e361f3e 3 *
Anna Bridge 186:707f6e361f3e 4 * Permission is hereby granted, free of charge, to any person obtaining a
Anna Bridge 186:707f6e361f3e 5 * copy of this software and associated documentation files (the "Software"),
Anna Bridge 186:707f6e361f3e 6 * to deal in the Software without restriction, including without limitation
Anna Bridge 186:707f6e361f3e 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
Anna Bridge 186:707f6e361f3e 8 * and/or sell copies of the Software, and to permit persons to whom the
Anna Bridge 186:707f6e361f3e 9 * Software is furnished to do so, subject to the following conditions:
Anna Bridge 186:707f6e361f3e 10 *
Anna Bridge 186:707f6e361f3e 11 * The above copyright notice and this permission notice shall be included
Anna Bridge 186:707f6e361f3e 12 * in all copies or substantial portions of the Software.
Anna Bridge 186:707f6e361f3e 13 *
Anna Bridge 186:707f6e361f3e 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
Anna Bridge 186:707f6e361f3e 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Anna Bridge 186:707f6e361f3e 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Anna Bridge 186:707f6e361f3e 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
Anna Bridge 186:707f6e361f3e 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
Anna Bridge 186:707f6e361f3e 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
Anna Bridge 186:707f6e361f3e 20 * OTHER DEALINGS IN THE SOFTWARE.
Anna Bridge 186:707f6e361f3e 21 *
Anna Bridge 186:707f6e361f3e 22 * Except as contained in this notice, the name of Maxim Integrated
Anna Bridge 186:707f6e361f3e 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
Anna Bridge 186:707f6e361f3e 24 * Products, Inc. Branding Policy.
Anna Bridge 186:707f6e361f3e 25 *
Anna Bridge 186:707f6e361f3e 26 * The mere transfer of this software does not imply any licenses
Anna Bridge 186:707f6e361f3e 27 * of trade secrets, proprietary technology, copyrights, patents,
Anna Bridge 186:707f6e361f3e 28 * trademarks, maskwork rights, or any other form of intellectual
Anna Bridge 186:707f6e361f3e 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
Anna Bridge 186:707f6e361f3e 30 * ownership rights.
Anna Bridge 186:707f6e361f3e 31 *******************************************************************************
Anna Bridge 186:707f6e361f3e 32 */
Anna Bridge 186:707f6e361f3e 33
Anna Bridge 186:707f6e361f3e 34 #include "port_api.h"
Anna Bridge 186:707f6e361f3e 35 #include "pinmap.h"
Anna Bridge 186:707f6e361f3e 36 #include "gpio_api.h"
Anna Bridge 186:707f6e361f3e 37 #include "gpio_regs.h"
Anna Bridge 186:707f6e361f3e 38 #include "clkman_regs.h"
Anna Bridge 186:707f6e361f3e 39
Anna Bridge 186:707f6e361f3e 40 PinName port_pin(PortName port, int pin_n)
Anna Bridge 186:707f6e361f3e 41 {
Anna Bridge 186:707f6e361f3e 42 return (PinName)((port << PORT_SHIFT) | pin_n);
Anna Bridge 186:707f6e361f3e 43 }
Anna Bridge 186:707f6e361f3e 44
Anna Bridge 186:707f6e361f3e 45 void port_init(port_t *obj, PortName port, int mask, PinDirection direction)
Anna Bridge 186:707f6e361f3e 46 {
Anna Bridge 186:707f6e361f3e 47 obj->port = port;
Anna Bridge 186:707f6e361f3e 48 obj->mask = mask;
Anna Bridge 186:707f6e361f3e 49 obj->reg_out = &MXC_GPIO->out_val[port];
Anna Bridge 186:707f6e361f3e 50 obj->reg_in = &MXC_GPIO->in_val[port];
Anna Bridge 186:707f6e361f3e 51 obj->mode = PullDefault;
Anna Bridge 186:707f6e361f3e 52
Anna Bridge 186:707f6e361f3e 53 /* Ensure that the GPIO clock is enabled */
Anna Bridge 186:707f6e361f3e 54 MXC_CLKMAN->sys_clk_ctrl_6_gpio = MXC_S_CLKMAN_CLK_SCALE_DIV_1;
Anna Bridge 186:707f6e361f3e 55
Anna Bridge 186:707f6e361f3e 56 uint32_t i;
Anna Bridge 186:707f6e361f3e 57 // The function is set per pin: reuse gpio logic
Anna Bridge 186:707f6e361f3e 58 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
Anna Bridge 186:707f6e361f3e 59 if (obj->mask & (1 << i)) {
Anna Bridge 186:707f6e361f3e 60 gpio_set(port_pin(obj->port, i));
Anna Bridge 186:707f6e361f3e 61 pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
Anna Bridge 186:707f6e361f3e 62 }
Anna Bridge 186:707f6e361f3e 63 }
Anna Bridge 186:707f6e361f3e 64 }
Anna Bridge 186:707f6e361f3e 65
Anna Bridge 186:707f6e361f3e 66 void port_mode(port_t *obj, PinMode mode)
Anna Bridge 186:707f6e361f3e 67 {
Anna Bridge 186:707f6e361f3e 68 uint32_t i;
Anna Bridge 186:707f6e361f3e 69 obj->mode = mode;
Anna Bridge 186:707f6e361f3e 70 // The mode is set per pin: reuse pinmap logic
Anna Bridge 186:707f6e361f3e 71 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
Anna Bridge 186:707f6e361f3e 72 if (obj->mask & (1 << i)) {
Anna Bridge 186:707f6e361f3e 73 pin_mode(port_pin(obj->port, i), mode);
Anna Bridge 186:707f6e361f3e 74 }
Anna Bridge 186:707f6e361f3e 75 }
Anna Bridge 186:707f6e361f3e 76 }
Anna Bridge 186:707f6e361f3e 77
Anna Bridge 186:707f6e361f3e 78 void port_dir(port_t *obj, PinDirection direction)
Anna Bridge 186:707f6e361f3e 79 {
Anna Bridge 186:707f6e361f3e 80 uint32_t i;
Anna Bridge 186:707f6e361f3e 81 // The mode is set per pin: reuse gpio logic
Anna Bridge 186:707f6e361f3e 82 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
Anna Bridge 186:707f6e361f3e 83 if (obj->mask & (1 << i)) {
Anna Bridge 186:707f6e361f3e 84 pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
Anna Bridge 186:707f6e361f3e 85 }
Anna Bridge 186:707f6e361f3e 86 }
Anna Bridge 186:707f6e361f3e 87 }
Anna Bridge 186:707f6e361f3e 88
Anna Bridge 186:707f6e361f3e 89 void port_write(port_t *obj, int value)
Anna Bridge 186:707f6e361f3e 90 {
Anna Bridge 186:707f6e361f3e 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
Anna Bridge 186:707f6e361f3e 92 }
Anna Bridge 186:707f6e361f3e 93
Anna Bridge 186:707f6e361f3e 94 int port_read(port_t *obj)
Anna Bridge 186:707f6e361f3e 95 {
Anna Bridge 186:707f6e361f3e 96 return (*obj->reg_in & obj->mask);
Anna Bridge 186:707f6e361f3e 97 }
Anna Bridge 186:707f6e361f3e 98