/* * Copyright (c) 2020-2021, Bluetrum Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2020-11-19 greedyhao first version */ #include "drv_gpio.h" #ifdef RT_USING_PIN // #define DRV_DEBUG #define LOG_TAG "drv.gpio" #include <drv_log.h> struct port_info { rt_uint8_t start_pin; rt_uint8_t delta_pin; rt_uint8_t total_pin; }; /* It needs to be adjusted to the hardware. */ static const struct port_info port_table[] = { {0, 8, 0}, /* PA0-PA7 */ {0, 5, 8}, /* PB0-PB4 */ {0, 8, 13}, /* PE0-PE7 */ {0, 6, 21}, /* PF0-PF5 */ }; static const hal_sfr_t port_sfr[] = { GPIOA_BASE, GPIOB_BASE, GPIOE_BASE, GPIOF_BASE, }; static rt_uint8_t _pin_port(rt_uint32_t pin) { rt_uint8_t port = 0; for (port = 0; port < 3; port++) { if (pin < (port_table[port].total_pin + port_table[port].delta_pin)) { break; } } return port; } #define PIN_NUM(port, no) ((rt_uint8_t)(port_table[port].total_pin + no - port_table[port].start_pin)) #define PIN_PORT(pin) _pin_port(pin) #define PORT_SFR(port) (port_sfr[(port)]) #define PIN_NO(pin) (rt_uint8_t)((pin) & 0xFu) static rt_base_t ab32_pin_get(const char *name) { rt_base_t pin = 0; int hw_port_num, hw_pin_num = 0; int i, name_len; name_len = rt_strlen(name); if ((name_len < 4) || (name_len >= 6)) { return -RT_EINVAL; } if ((name[0] != 'P') || (name[2] != '.')) { return -RT_EINVAL; } if ((name[1] >= 'A') && (name[1] <= 'B')) { hw_port_num = (int)(name[1] - 'A'); } else if ((name[1] >= 'E') && (name[1] <= 'G')) { hw_port_num = (int)(name[1] - 'A') - 2; /* Without 'C' and 'D'. */ } else { return -RT_EINVAL; } for (i = 3; i < name_len; i++) { hw_pin_num *= 10; hw_pin_num += name[i] - '0'; } pin = PIN_NUM(hw_port_num, hw_pin_num); LOG_D("name=%s", name); LOG_D("hw_port_num=%d hw_pin_num=%d pin=%d", hw_port_num, hw_pin_num, pin); return pin; } static void ab32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value) { rt_uint8_t port = PIN_PORT(pin); rt_uint8_t gpio_pin = pin - port_table[port].total_pin; hal_gpio_write(PORT_SFR(port), gpio_pin, (rt_uint8_t)value); } static int ab32_pin_read(rt_device_t dev, rt_base_t pin) { rt_uint8_t port = PIN_PORT(pin); rt_uint8_t gpio_pin = pin - port_table[port].total_pin; return hal_gpio_read(PORT_SFR(port), gpio_pin); } static void ab32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode) { struct gpio_init gpio_init; rt_uint8_t port = PIN_PORT(pin); gpio_init.pin = BIT(pin - port_table[port].total_pin); gpio_init.de = GPIO_DIGITAL; gpio_init.af_con = GPIO_AFDIS; LOG_D("port=%d pin=%d", port, gpio_init.pin); switch (mode) { case PIN_MODE_INPUT: gpio_init.pull = GPIO_NOPULL; gpio_init.dir = GPIO_DIR_INPUT; break; case PIN_MODE_INPUT_PULLUP: gpio_init.pull = GPIO_PULLUP; gpio_init.dir = GPIO_DIR_INPUT; break; case PIN_MODE_INPUT_PULLDOWN: gpio_init.pull = GPIO_PULLDOWN; gpio_init.dir = GPIO_DIR_INPUT; break; case PIN_MODE_OUTPUT: case PIN_MODE_OUTPUT_OD: default: gpio_init.pull = GPIO_NOPULL; gpio_init.dir = GPIO_DIR_OUTPUT; break; } hal_gpio_init(PORT_SFR(port), &gpio_init); } static rt_err_t ab32_pin_attach_irq(struct rt_device *device, rt_int32_t pin, rt_uint32_t mode, void (*hdr)(void *args), void *args) { return -RT_ERROR; } static rt_err_t ab32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin) { return -RT_ERROR; } static rt_err_t ab32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled) { return -RT_ERROR; } const static struct rt_pin_ops _ab32_pin_ops = { ab32_pin_mode, ab32_pin_write, ab32_pin_read, ab32_pin_attach_irq, ab32_pin_dettach_irq, ab32_pin_irq_enable, ab32_pin_get, }; int rt_hw_pin_init(void) { return rt_device_pin_register("pin", &_ab32_pin_ops, RT_NULL); } #endif