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targets/TARGET_Maxim/TARGET_MAX32625/port_api.c@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
150:02e0a0aed4ec 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 150:02e0a0aed4ec 1 /*******************************************************************************
<> 150:02e0a0aed4ec 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
<> 150:02e0a0aed4ec 3 *
<> 150:02e0a0aed4ec 4 * Permission is hereby granted, free of charge, to any person obtaining a
<> 150:02e0a0aed4ec 5 * copy of this software and associated documentation files (the "Software"),
<> 150:02e0a0aed4ec 6 * to deal in the Software without restriction, including without limitation
<> 150:02e0a0aed4ec 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
<> 150:02e0a0aed4ec 8 * and/or sell copies of the Software, and to permit persons to whom the
<> 150:02e0a0aed4ec 9 * Software is furnished to do so, subject to the following conditions:
<> 150:02e0a0aed4ec 10 *
<> 150:02e0a0aed4ec 11 * The above copyright notice and this permission notice shall be included
<> 150:02e0a0aed4ec 12 * in all copies or substantial portions of the Software.
<> 150:02e0a0aed4ec 13 *
<> 150:02e0a0aed4ec 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
<> 150:02e0a0aed4ec 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
<> 150:02e0a0aed4ec 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
<> 150:02e0a0aed4ec 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
<> 150:02e0a0aed4ec 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
<> 150:02e0a0aed4ec 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
<> 150:02e0a0aed4ec 20 * OTHER DEALINGS IN THE SOFTWARE.
<> 150:02e0a0aed4ec 21 *
<> 150:02e0a0aed4ec 22 * Except as contained in this notice, the name of Maxim Integrated
<> 150:02e0a0aed4ec 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
<> 150:02e0a0aed4ec 24 * Products, Inc. Branding Policy.
<> 150:02e0a0aed4ec 25 *
<> 150:02e0a0aed4ec 26 * The mere transfer of this software does not imply any licenses
<> 150:02e0a0aed4ec 27 * of trade secrets, proprietary technology, copyrights, patents,
<> 150:02e0a0aed4ec 28 * trademarks, maskwork rights, or any other form of intellectual
<> 150:02e0a0aed4ec 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
<> 150:02e0a0aed4ec 30 * ownership rights.
<> 150:02e0a0aed4ec 31 *******************************************************************************
<> 150:02e0a0aed4ec 32 */
<> 150:02e0a0aed4ec 33
<> 150:02e0a0aed4ec 34 #include "port_api.h"
<> 150:02e0a0aed4ec 35 #include "pinmap.h"
<> 150:02e0a0aed4ec 36 #include "gpio_api.h"
<> 150:02e0a0aed4ec 37 #include "gpio_regs.h"
<> 150:02e0a0aed4ec 38 #include "clkman_regs.h"
<> 150:02e0a0aed4ec 39
<> 150:02e0a0aed4ec 40 PinName port_pin(PortName port, int pin_n)
<> 150:02e0a0aed4ec 41 {
<> 150:02e0a0aed4ec 42 return (PinName)((port << PORT_SHIFT) | pin_n);
<> 150:02e0a0aed4ec 43 }
<> 150:02e0a0aed4ec 44
<> 150:02e0a0aed4ec 45 void port_init(port_t *obj, PortName port, int mask, PinDirection direction)
<> 150:02e0a0aed4ec 46 {
<> 150:02e0a0aed4ec 47 obj->port = port;
<> 150:02e0a0aed4ec 48 obj->mask = mask;
<> 150:02e0a0aed4ec 49 obj->reg_out = &MXC_GPIO->out_val[port];
<> 150:02e0a0aed4ec 50 obj->reg_in = &MXC_GPIO->in_val[port];
<> 150:02e0a0aed4ec 51 obj->mode = PullDefault;
<> 150:02e0a0aed4ec 52
<> 150:02e0a0aed4ec 53 /* Ensure that the GPIO clock is enabled */
<> 150:02e0a0aed4ec 54 MXC_CLKMAN->sys_clk_ctrl_6_gpio = MXC_S_CLKMAN_CLK_SCALE_DIV_1;
<> 150:02e0a0aed4ec 55
<> 150:02e0a0aed4ec 56 uint32_t i;
<> 150:02e0a0aed4ec 57 // The function is set per pin: reuse gpio logic
<> 150:02e0a0aed4ec 58 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
<> 150:02e0a0aed4ec 59 if (obj->mask & (1 << i)) {
<> 150:02e0a0aed4ec 60 gpio_set(port_pin(obj->port, i));
<> 150:02e0a0aed4ec 61 pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
<> 150:02e0a0aed4ec 62 }
<> 150:02e0a0aed4ec 63 }
<> 150:02e0a0aed4ec 64 }
<> 150:02e0a0aed4ec 65
<> 150:02e0a0aed4ec 66 void port_mode(port_t *obj, PinMode mode)
<> 150:02e0a0aed4ec 67 {
<> 150:02e0a0aed4ec 68 uint32_t i;
<> 150:02e0a0aed4ec 69 obj->mode = mode;
<> 150:02e0a0aed4ec 70 // The mode is set per pin: reuse pinmap logic
<> 150:02e0a0aed4ec 71 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
<> 150:02e0a0aed4ec 72 if (obj->mask & (1 << i)) {
<> 150:02e0a0aed4ec 73 pin_mode(port_pin(obj->port, i), mode);
<> 150:02e0a0aed4ec 74 }
<> 150:02e0a0aed4ec 75 }
<> 150:02e0a0aed4ec 76 }
<> 150:02e0a0aed4ec 77
<> 150:02e0a0aed4ec 78 void port_dir(port_t *obj, PinDirection direction)
<> 150:02e0a0aed4ec 79 {
<> 150:02e0a0aed4ec 80 uint32_t i;
<> 150:02e0a0aed4ec 81 // The mode is set per pin: reuse gpio logic
<> 150:02e0a0aed4ec 82 for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
<> 150:02e0a0aed4ec 83 if (obj->mask & (1 << i)) {
<> 150:02e0a0aed4ec 84 pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
<> 150:02e0a0aed4ec 85 }
<> 150:02e0a0aed4ec 86 }
<> 150:02e0a0aed4ec 87 }
<> 150:02e0a0aed4ec 88
<> 150:02e0a0aed4ec 89 void port_write(port_t *obj, int value)
<> 150:02e0a0aed4ec 90 {
<> 150:02e0a0aed4ec 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
<> 150:02e0a0aed4ec 92 }
<> 150:02e0a0aed4ec 93
<> 150:02e0a0aed4ec 94 int port_read(port_t *obj)
<> 150:02e0a0aed4ec 95 {
<> 150:02e0a0aed4ec 96 return (*obj->reg_in & obj->mask);
<> 150:02e0a0aed4ec 97 }
<> 150:02e0a0aed4ec 98