mirror of https://github.com/ARMmbed/mbed-os.git
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/* mbed Microcontroller Library
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* (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2017 All rights reserved
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed_assert.h"
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#include "pinmap.h"
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#include "tmpm066_gpio.h"
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#define PIN_FUNC_MAX 6
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void pin_function(PinName pin, int function)
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{
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uint32_t port = 0;
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uint8_t bit = 0;
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uint8_t i = 0;
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uint8_t func = 0;
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uint8_t dir = 0;
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// Assert that pin is valid
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MBED_ASSERT(pin != NC);
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// Calculate pin function and pin direction
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func = PIN_FUNC(function);
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dir = PIN_DIR(function);
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// Calculate port and pin position
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port = PIN_PORT(pin);
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bit = PIN_POS(pin);
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// Set function if function is in range
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if (func <= PIN_FUNC_MAX) {
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// Disable other functions
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for (i = 0; i < PIN_FUNC_MAX; i++) {
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if (i != (func - 1)) {
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GPIO_DisableFuncReg((GPIO_Port)port, i, (1 << bit));
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}
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}
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// Set pin function
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if (func) {
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GPIO_EnableFuncReg((GPIO_Port)port, (uint8_t)(func - 1), (1 << bit));
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}
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}
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// Set direction if direction is in range
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switch (dir) {
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case PIN_INPUT:
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GPIO_SetInputEnableReg((GPIO_Port)port, (1 << bit), ENABLE);
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GPIO_SetOutputEnableReg((GPIO_Port)port, (1 << bit), DISABLE);
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break;
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case PIN_OUTPUT:
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GPIO_SetOutputEnableReg((GPIO_Port)port, (1 << bit), ENABLE);
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GPIO_SetInputEnableReg((GPIO_Port)port, (1 << bit), DISABLE);
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break;
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case PIN_INOUT:
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GPIO_SetOutputEnableReg((GPIO_Port)port, (1 << bit), ENABLE);
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GPIO_SetInputEnableReg((GPIO_Port)port, (1 << bit), ENABLE);
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break;
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default:
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break;
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}
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}
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void pin_mode(PinName pin, PinMode mode)
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{
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uint32_t port = 0;
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uint8_t bit = 0;
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// Assert that pin is valid
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MBED_ASSERT(pin != NC);
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// Check if function is in range
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if (mode > OpenDrain) {
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return;
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}
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// Calculate port and pin position
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port = PIN_PORT(pin);
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bit = PIN_POS(pin);
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// Set pin mode
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switch (mode) {
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case PullNone:
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GPIO_SetPullUp((GPIO_Port)port, (1 << bit), DISABLE);
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GPIO_SetPullDown((GPIO_Port)port, (1 << bit), DISABLE);
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GPIO_SetOpenDrain((GPIO_Port)port, (1 << bit), DISABLE);
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break;
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case PullUp:
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GPIO_SetPullUp((GPIO_Port)port, (1 << bit), ENABLE);
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break;
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case PullDown:
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GPIO_SetPullDown((GPIO_Port)port, (1 << bit), ENABLE);
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break;
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case OpenDrain:
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GPIO_SetOpenDrain((GPIO_Port)port, (1 << bit), ENABLE);
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break;
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default:
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break;
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}
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}
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