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targets/hal/TARGET_Maxim/TARGET_MAX32600/port_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /*******************************************************************************
bogdanm 0:9b334a45a8ff 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Permission is hereby granted, free of charge, to any person obtaining a
bogdanm 0:9b334a45a8ff 5 * copy of this software and associated documentation files (the "Software"),
bogdanm 0:9b334a45a8ff 6 * to deal in the Software without restriction, including without limitation
bogdanm 0:9b334a45a8ff 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
bogdanm 0:9b334a45a8ff 8 * and/or sell copies of the Software, and to permit persons to whom the
bogdanm 0:9b334a45a8ff 9 * Software is furnished to do so, subject to the following conditions:
bogdanm 0:9b334a45a8ff 10 *
bogdanm 0:9b334a45a8ff 11 * The above copyright notice and this permission notice shall be included
bogdanm 0:9b334a45a8ff 12 * in all copies or substantial portions of the Software.
bogdanm 0:9b334a45a8ff 13 *
bogdanm 0:9b334a45a8ff 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
bogdanm 0:9b334a45a8ff 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
bogdanm 0:9b334a45a8ff 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
bogdanm 0:9b334a45a8ff 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
bogdanm 0:9b334a45a8ff 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
bogdanm 0:9b334a45a8ff 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
bogdanm 0:9b334a45a8ff 20 * OTHER DEALINGS IN THE SOFTWARE.
bogdanm 0:9b334a45a8ff 21 *
bogdanm 0:9b334a45a8ff 22 * Except as contained in this notice, the name of Maxim Integrated
bogdanm 0:9b334a45a8ff 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
bogdanm 0:9b334a45a8ff 24 * Products, Inc. Branding Policy.
bogdanm 0:9b334a45a8ff 25 *
bogdanm 0:9b334a45a8ff 26 * The mere transfer of this software does not imply any licenses
bogdanm 0:9b334a45a8ff 27 * of trade secrets, proprietary technology, copyrights, patents,
bogdanm 0:9b334a45a8ff 28 * trademarks, maskwork rights, or any other form of intellectual
bogdanm 0:9b334a45a8ff 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
bogdanm 0:9b334a45a8ff 30 * ownership rights.
bogdanm 0:9b334a45a8ff 31 *******************************************************************************
bogdanm 0:9b334a45a8ff 32 */
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 #include "port_api.h"
bogdanm 0:9b334a45a8ff 35 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 36 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 37 #include "gpio_regs.h"
bogdanm 0:9b334a45a8ff 38 #include "clkman_regs.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 PinName port_pin(PortName port, int pin_n)
bogdanm 0:9b334a45a8ff 41 {
bogdanm 0:9b334a45a8ff 42 return (PinName)((port << PORT_SHIFT) | pin_n);
bogdanm 0:9b334a45a8ff 43 }
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
bogdanm 0:9b334a45a8ff 46 {
bogdanm 0:9b334a45a8ff 47 obj->port = port;
bogdanm 0:9b334a45a8ff 48 obj->mask = mask;
bogdanm 0:9b334a45a8ff 49 obj->reg_out = &MXC_GPIO->out_val[port];
bogdanm 0:9b334a45a8ff 50 obj->reg_in = &MXC_GPIO->in_val[port];
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 /* Ensure that the GPIO clock is enabled */
bogdanm 0:9b334a45a8ff 53 if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) {
bogdanm 0:9b334a45a8ff 54 MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
bogdanm 0:9b334a45a8ff 55 }
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 uint32_t i;
bogdanm 0:9b334a45a8ff 58 // The function is set per pin: reuse gpio logic
bogdanm 0:9b334a45a8ff 59 for (i=0; i<32; i++) {
bogdanm 0:9b334a45a8ff 60 if (obj->mask & (1<<i)) {
bogdanm 0:9b334a45a8ff 61 gpio_set(port_pin(obj->port, i));
bogdanm 0:9b334a45a8ff 62 pin_dir(port_pin(obj->port, i), dir);
bogdanm 0:9b334a45a8ff 63 }
bogdanm 0:9b334a45a8ff 64 }
bogdanm 0:9b334a45a8ff 65 }
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 void port_mode(port_t *obj, PinMode mode)
bogdanm 0:9b334a45a8ff 68 {
bogdanm 0:9b334a45a8ff 69 uint32_t i;
bogdanm 0:9b334a45a8ff 70 // The mode is set per pin: reuse pinmap logic
bogdanm 0:9b334a45a8ff 71 for (i=0; i<32; i++) {
bogdanm 0:9b334a45a8ff 72 if (obj->mask & (1<<i)) {
bogdanm 0:9b334a45a8ff 73 pin_mode(port_pin(obj->port, i), mode);
bogdanm 0:9b334a45a8ff 74 }
bogdanm 0:9b334a45a8ff 75 }
bogdanm 0:9b334a45a8ff 76 }
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 void port_dir(port_t *obj, PinDirection dir)
bogdanm 0:9b334a45a8ff 79 {
bogdanm 0:9b334a45a8ff 80 uint32_t i;
bogdanm 0:9b334a45a8ff 81 // The mode is set per pin: reuse gpio logic
bogdanm 0:9b334a45a8ff 82 for (i=0; i<32; i++) {
bogdanm 0:9b334a45a8ff 83 if (obj->mask & (1<<i)) {
bogdanm 0:9b334a45a8ff 84 pin_dir(port_pin(obj->port, i), dir);
bogdanm 0:9b334a45a8ff 85 }
bogdanm 0:9b334a45a8ff 86 }
bogdanm 0:9b334a45a8ff 87 }
bogdanm 0:9b334a45a8ff 88
bogdanm 0:9b334a45a8ff 89 void port_write(port_t *obj, int value)
bogdanm 0:9b334a45a8ff 90 {
bogdanm 0:9b334a45a8ff 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
bogdanm 0:9b334a45a8ff 92 }
bogdanm 0:9b334a45a8ff 93
bogdanm 0:9b334a45a8ff 94 int port_read(port_t *obj)
bogdanm 0:9b334a45a8ff 95 {
bogdanm 0:9b334a45a8ff 96 return (*obj->reg_in & obj->mask);
bogdanm 0:9b334a45a8ff 97 }