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Diff: targets/TARGET_Maxim/TARGET_MAX32625/port_api.c
- Revision:
- 150:02e0a0aed4ec
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_Maxim/TARGET_MAX32625/port_api.c Tue Nov 08 17:45:16 2016 +0000 @@ -0,0 +1,98 @@ +/******************************************************************************* + * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES + * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name of Maxim Integrated + * Products, Inc. shall not be used except as stated in the Maxim Integrated + * Products, Inc. Branding Policy. + * + * The mere transfer of this software does not imply any licenses + * of trade secrets, proprietary technology, copyrights, patents, + * trademarks, maskwork rights, or any other form of intellectual + * property whatsoever. Maxim Integrated Products, Inc. retains all + * ownership rights. + ******************************************************************************* + */ + +#include "port_api.h" +#include "pinmap.h" +#include "gpio_api.h" +#include "gpio_regs.h" +#include "clkman_regs.h" + +PinName port_pin(PortName port, int pin_n) +{ + return (PinName)((port << PORT_SHIFT) | pin_n); +} + +void port_init(port_t *obj, PortName port, int mask, PinDirection direction) +{ + obj->port = port; + obj->mask = mask; + obj->reg_out = &MXC_GPIO->out_val[port]; + obj->reg_in = &MXC_GPIO->in_val[port]; + obj->mode = PullDefault; + + /* Ensure that the GPIO clock is enabled */ + MXC_CLKMAN->sys_clk_ctrl_6_gpio = MXC_S_CLKMAN_CLK_SCALE_DIV_1; + + uint32_t i; + // The function is set per pin: reuse gpio logic + for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) { + if (obj->mask & (1 << i)) { + gpio_set(port_pin(obj->port, i)); + pin_dir_mode(port_pin(obj->port, i), direction, obj->mode); + } + } +} + +void port_mode(port_t *obj, PinMode mode) +{ + uint32_t i; + obj->mode = mode; + // The mode is set per pin: reuse pinmap logic + for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) { + if (obj->mask & (1 << i)) { + pin_mode(port_pin(obj->port, i), mode); + } + } +} + +void port_dir(port_t *obj, PinDirection direction) +{ + uint32_t i; + // The mode is set per pin: reuse gpio logic + for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) { + if (obj->mask & (1 << i)) { + pin_dir_mode(port_pin(obj->port, i), direction, obj->mode); + } + } +} + +void port_write(port_t *obj, int value) +{ + *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask); +} + +int port_read(port_t *obj) +{ + return (*obj->reg_in & obj->mask); +} +