added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Maxim/TARGET_MAX32610/gpio_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?
User | Revision | Line number | New 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 "mbed_assert.h" |
bogdanm | 0:9b334a45a8ff | 35 | #include "gpio_api.h" |
bogdanm | 0:9b334a45a8ff | 36 | #include "pinmap.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 | uint32_t gpio_set(PinName name) |
bogdanm | 0:9b334a45a8ff | 41 | { |
bogdanm | 0:9b334a45a8ff | 42 | MBED_ASSERT(name != (PinName)NC); |
bogdanm | 0:9b334a45a8ff | 43 | pin_function(name, 0); |
bogdanm | 0:9b334a45a8ff | 44 | return 1 << PINNAME_TO_PIN(name); |
bogdanm | 0:9b334a45a8ff | 45 | } |
bogdanm | 0:9b334a45a8ff | 46 | |
bogdanm | 0:9b334a45a8ff | 47 | void gpio_init(gpio_t *obj, PinName name) |
bogdanm | 0:9b334a45a8ff | 48 | { |
bogdanm | 0:9b334a45a8ff | 49 | obj->name = name; |
bogdanm | 0:9b334a45a8ff | 50 | if (name == (PinName)NC) { |
bogdanm | 0:9b334a45a8ff | 51 | return; |
bogdanm | 0:9b334a45a8ff | 52 | } |
bogdanm | 0:9b334a45a8ff | 53 | |
bogdanm | 0:9b334a45a8ff | 54 | unsigned int port = PINNAME_TO_PORT(name); |
bogdanm | 0:9b334a45a8ff | 55 | unsigned int pin = PINNAME_TO_PIN(name); |
bogdanm | 0:9b334a45a8ff | 56 | |
bogdanm | 0:9b334a45a8ff | 57 | obj->reg_out = (uint32_t*)BITBAND(&MXC_GPIO->out_val[port], pin); |
bogdanm | 0:9b334a45a8ff | 58 | obj->reg_in = (uint32_t*)BITBAND(&MXC_GPIO->in_val[port], pin); |
bogdanm | 0:9b334a45a8ff | 59 | |
bogdanm | 0:9b334a45a8ff | 60 | /* Ensure that the GPIO clock is enabled */ |
bogdanm | 0:9b334a45a8ff | 61 | if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) { |
bogdanm | 0:9b334a45a8ff | 62 | MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED; |
bogdanm | 0:9b334a45a8ff | 63 | } |
bogdanm | 0:9b334a45a8ff | 64 | } |
bogdanm | 0:9b334a45a8ff | 65 | |
bogdanm | 0:9b334a45a8ff | 66 | void gpio_mode(gpio_t *obj, PinMode mode) |
bogdanm | 0:9b334a45a8ff | 67 | { |
bogdanm | 0:9b334a45a8ff | 68 | pin_mode(obj->name, mode); |
bogdanm | 0:9b334a45a8ff | 69 | } |
bogdanm | 0:9b334a45a8ff | 70 | |
bogdanm | 0:9b334a45a8ff | 71 | void pin_dir(PinName name, PinDirection direction) |
bogdanm | 0:9b334a45a8ff | 72 | { |
bogdanm | 0:9b334a45a8ff | 73 | MBED_ASSERT(name != (PinName)NC); |
bogdanm | 0:9b334a45a8ff | 74 | |
bogdanm | 0:9b334a45a8ff | 75 | unsigned int port = PINNAME_TO_PORT(name); |
bogdanm | 0:9b334a45a8ff | 76 | unsigned int pin = PINNAME_TO_PIN(name); |
bogdanm | 0:9b334a45a8ff | 77 | |
bogdanm | 0:9b334a45a8ff | 78 | /* Set function */ |
bogdanm | 0:9b334a45a8ff | 79 | MXC_GPIO->func_sel[port] &= ~(0xF << (4 * pin)); |
bogdanm | 0:9b334a45a8ff | 80 | |
bogdanm | 0:9b334a45a8ff | 81 | /* Normal input is always enabled */ |
bogdanm | 0:9b334a45a8ff | 82 | MXC_GPIO->in_mode[port] &= ~(0xF << (4 * pin)); |
bogdanm | 0:9b334a45a8ff | 83 | |
bogdanm | 0:9b334a45a8ff | 84 | /* Set requested output mode */ |
bogdanm | 0:9b334a45a8ff | 85 | uint32_t out_mode = MXC_GPIO->out_mode[port]; |
bogdanm | 0:9b334a45a8ff | 86 | out_mode &= ~(0xF << (4 * pin)); |
bogdanm | 0:9b334a45a8ff | 87 | out_mode |= (direction << (4 * pin)); |
bogdanm | 0:9b334a45a8ff | 88 | MXC_GPIO->out_mode[port] = out_mode; |
bogdanm | 0:9b334a45a8ff | 89 | } |
bogdanm | 0:9b334a45a8ff | 90 | |
bogdanm | 0:9b334a45a8ff | 91 | void gpio_dir(gpio_t *obj, PinDirection direction) |
bogdanm | 0:9b334a45a8ff | 92 | { |
bogdanm | 0:9b334a45a8ff | 93 | pin_dir(obj->name, direction); |
bogdanm | 0:9b334a45a8ff | 94 | } |