| /**************************************************************************** |
| * arch/arm/src/xmc4/xmc4_gpio.h |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| #include "hardware/xmc4_ports.h" |
| |
| /**************************************************************************** |
| * Preprocessor Definitions |
| ****************************************************************************/ |
| |
| /* 32-bit GIO encoding: |
| * |
| * TTTT TMPD DDCC VO... .... .... PPPP BBBB |
| */ |
| |
| /* This identifies the GPIO pint type: |
| * |
| * TTTT T... .... .... .... .... .... .... |
| */ |
| |
| #define GPIO_PINTYPE_SHIFT (27) /* Bits 27-31: Pin type */ |
| #define GPIO_PINTYPE_MASK (31 << GPIO_PINTYPE_SHIFT) |
| |
| /* See chip/xmc4_ports.h for the IOCR definitions */ |
| |
| /* Direct input */ |
| |
| # define GPIO_INPUT (IOCR_INPUT_NOPULL << GPIO_PINTYPE_SHIFT) |
| # define GPIO_INPUT_PULLDOWN (IOCR_INPUT_PULLDOWN << GPIO_PINTYPE_SHIFT) |
| # define GPIO_INPUT_PULLUP (IOCR_INPUT_PULLUP << GPIO_PINTYPE_SHIFT) |
| # define GPIO_INPUT_CONT (IOCR_INPUT_CONT << GPIO_PINTYPE_SHIFT) |
| |
| /* Push-pull Output (direct input) */ |
| |
| # define GPIO_OUTPUT (IOCR_OUTPUT << GPIO_PINTYPE_SHIFT) |
| # define GPIO_OUTPUT_ALT1 (IOCR_OUTPUT_ALT1 << GPIO_PINTYPE_SHIFT) |
| # define GPIO_OUTPUT_ALT2 (IOCR_OUTPUT_ALT2 << GPIO_PINTYPE_SHIFT) |
| # define GPIO_OUTPUT_ALT3 (IOCR_OUTPUT_ALT3 << GPIO_PINTYPE_SHIFT) |
| # define GPIO_OUTPUT_ALT4 (IOCR_OUTPUT_ALT4 << GPIO_PINTYPE_SHIFT) |
| |
| # define _GPIO_OUTPUT_BIT (16 << GPIO_PINTYPE_SHIFT) |
| # define GPIO_ISINPUT(p) (((p) & _GPIO_OUTPUT_BIT) == 0) |
| # define GPIO_ISOUTPUT(p) (((p) & _GPIO_OUTPUT_BIT) != 0) |
| |
| /* Pin type modifier: |
| * |
| * .... .M.. .... .O.. .... .... .... .... |
| */ |
| |
| #define GPIO_INPUT_INVERT (1 << 26) /* Bit 26: Inverted direct input modifier */ |
| |
| #define GPIO_OUTPUT_OPENDRAIN (1 << 18) /* Bit 18: Output drain output modifier */ |
| #define GPIO_OUTPUT_PUSHPULL (0) /* Push-pull output is the default */ |
| |
| /* Disable PAD: |
| * |
| * .... ..P. .... ..... .... .... .... .... |
| * |
| * For P0-P6, the PDISC register is ready only. |
| * For P14-P15, the bit setting also selects Analog+Digital or Analog only |
| */ |
| |
| #define GPIO_PAD_DISABLE (1 << 25) /* Bit 25: Disable Pad (P7-P9) */ |
| #define GPIO_PAD_ANALOG (1 << 25) /* Bit 25: Analog only (P14-P15) */ |
| |
| /* Pad driver strength: |
| * |
| * .... ...D DD.. ..... .... ......... .... |
| */ |
| |
| #define GPIO_PADTYPE_SHIFT (22) /* Bits 22-24: Pad driver strength */ |
| #define GPIO_PADTYPE_MASK (7 << GPIO_PADTYPE_SHIFT) |
| |
| /* See chip/xmc4_ports.h for the PDR definitions */ |
| |
| /* Pad class A1: */ |
| |
| # define GPIO_PADA1_MEDIUM (PDR_PADA1_MEDIUM << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA1_WEAK (PDR_PADA1_WEAK << GPIO_PADTYPE_SHIFT) |
| |
| /* Pad class A1+: */ |
| |
| # define GPIO_PADA1P_STRONGSOFT (PDR_PADA1P_STRONGSOFT << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA1P_STRONGSLOW (PDR_PADA1P_STRONGSLOW << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA1P_MEDIUM (PDR_PADA1P_MEDIUM << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA1P_WEAK (PDR_PADA1P_WEAK << GPIO_PADTYPE_SHIFT) |
| |
| /* Pad class A2: */ |
| |
| # define GPIO_PADA2_STRONGSHARP (PDR_PADA2_STRONGSHARP << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA2_STRONGMEDIUM (PDR_PADA2_STRONGMEDIUM << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA2_STRONGSOFT (PDR_PADA2_STRONGSOFT << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA2_MEDIUM (PDR_PADA2_MEDIUM << GPIO_PADTYPE_SHIFT) |
| # define GPIO_PADA2_WEAK (PDR_PADA2_WEAK << GPIO_PADTYPE_SHIFT) |
| |
| /* Pin control: |
| * |
| * .... .... ..CC ..... .... .... .... .... |
| */ |
| |
| #define GPIO_PINCTRL_SHIFT (20) /* Bits 20-21: Pad driver strength */ |
| #define GPIO_PINCTRL_MASK (3 << GPIO_PINCTRL_SHIFT) |
| |
| /* See chip/xmc4_ports.h for the PDR definitions */ |
| |
| # define GPIO_PINCTRL_SOFTWARE (HWSEL_SW << GPIO_PINCTRL_SHIFT) |
| # define GPIO_PINCTRL_HW0 (HWSEL_HW0 << GPIO_PINCTRL_SHIFT) |
| # define GPIO_PINCTRL_HW1 (HWSEL_HW1 << GPIO_PINCTRL_SHIFT) |
| |
| /* If the pin is an GPIO output, then this identifies the initial output |
| * value: |
| * |
| * .... .... .... V.... .... .... PPPP BBBB |
| */ |
| |
| #define GPIO_OUTPUT_SET (1 << 19) /* Bit 19: Initial value of output */ |
| #define GPIO_OUTPUT_CLEAR (0) |
| |
| /* This identifies the GPIO port: |
| * |
| * .... .... .... .... .... .... PPPP .... |
| */ |
| |
| #define GPIO_PORT_SHIFT (4) /* Bit 4-7: Port number */ |
| #define GPIO_PORT_MASK (15 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT0 (0 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT1 (1 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT2 (2 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT3 (3 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT4 (4 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT5 (5 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT6 (6 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT7 (7 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT8 (8 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT9 (9 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT14 (14 << GPIO_PORT_SHIFT) |
| # define GPIO_PORT15 (15 << GPIO_PORT_SHIFT) |
| |
| /* This identifies the bit in the port: |
| * |
| * ... ..... .... .... .... .... .... BBBB |
| */ |
| |
| #define GPIO_PIN_SHIFT (0) /* Bits 0-3: GPIO pin: 0-15 */ |
| #define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN0 (0 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN1 (1 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN2 (2 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN3 (3 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN4 (4 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN5 (5 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN6 (6 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN7 (7 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN8 (8 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN9 (9 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN10 (10 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN11 (11 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN12 (12 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN13 (13 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN14 (14 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN15 (15 << GPIO_PIN_SHIFT) |
| |
| /**************************************************************************** |
| * Public Types |
| ****************************************************************************/ |
| |
| /* This is a type large enough to hold all pin configuration bits. */ |
| |
| typedef uint32_t gpioconfig_t; |
| |
| /**************************************************************************** |
| * Public Functions Prototypes |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: xmc4_gpio_config |
| * |
| * Description: |
| * Configure a PIN based on bit-encoded description of the pin, |
| * 'pincconfig'. |
| * |
| ****************************************************************************/ |
| |
| int xmc4_gpio_config(gpioconfig_t pinconfig); |
| |
| /**************************************************************************** |
| * Name: xmc4_gpio_write |
| * |
| * Description: |
| * Write one or zero to the PORT pin selected by 'pinconfig' |
| * |
| ****************************************************************************/ |
| |
| void xmc4_gpio_write(gpioconfig_t pinconfig, bool value); |
| |
| /**************************************************************************** |
| * Name: xmc4_gpio_read |
| * |
| * Description: |
| * Read one or zero from the PORT pin selected by 'pinconfig' |
| * |
| ****************************************************************************/ |
| |
| bool xmc4_gpio_read(gpioconfig_t pinconfig); |
