167 lines
4.9 KiB
C
167 lines
4.9 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020, Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "../../board.h"
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#include "board.h"
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#include "esp_rom_gpio.h"
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#include "hal/gpio_ll.h"
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#include "hal/usb_hal.h"
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#include "soc/usb_periph.h"
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#include "driver/rmt.h"
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#if ESP_IDF_VERSION_MAJOR > 4
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#include "esp_private/periph_ctrl.h"
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#else
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#include "driver/periph_ctrl.h"
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#endif
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#ifdef NEOPIXEL_PIN
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#include "led_strip.h"
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static led_strip_t *strip;
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#endif
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM DECLARATION
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//--------------------------------------------------------------------+
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static void configure_pins(usb_hal_context_t *usb);
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// Initialize on-board peripherals : led, button, uart and USB
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void board_init(void)
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{
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#ifdef NEOPIXEL_PIN
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#ifdef NEOPIXEL_POWER_PIN
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gpio_reset_pin(NEOPIXEL_POWER_PIN);
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gpio_set_direction(NEOPIXEL_POWER_PIN, GPIO_MODE_OUTPUT);
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gpio_set_level(NEOPIXEL_POWER_PIN, NEOPIXEL_POWER_STATE);
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#endif
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// WS2812 Neopixel driver with RMT peripheral
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rmt_config_t config = RMT_DEFAULT_CONFIG_TX(NEOPIXEL_PIN, RMT_CHANNEL_0);
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config.clk_div = 2; // set counter clock to 40MHz
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rmt_config(&config);
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rmt_driver_install(config.channel, 0, 0);
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led_strip_config_t strip_config = LED_STRIP_DEFAULT_CONFIG(1, (led_strip_dev_t) config.channel);
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strip = led_strip_new_rmt_ws2812(&strip_config);
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strip->clear(strip, 100); // off led
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#endif
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#ifdef LED_PIN
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gpio_reset_pin(LED_PIN);
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#if LED_ACTIVE
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gpio_set_direction(LED_PIN, GPIO_MODE_OUTPUT);
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#else
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gpio_set_direction(LED_PIN, GPIO_MODE_OUTPUT_OD);
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#endif
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#endif
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// Button
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esp_rom_gpio_pad_select_gpio(BUTTON_PIN);
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gpio_set_direction(BUTTON_PIN, GPIO_MODE_INPUT);
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gpio_set_pull_mode(BUTTON_PIN, BUTTON_STATE_ACTIVE ? GPIO_PULLDOWN_ONLY : GPIO_PULLUP_ONLY);
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// USB Controller Hal init
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periph_module_reset(PERIPH_USB_MODULE);
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periph_module_enable(PERIPH_USB_MODULE);
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usb_hal_context_t hal = {
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.use_external_phy = false // use built-in PHY
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};
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usb_hal_init(&hal);
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configure_pins(&hal);
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}
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static void configure_pins(usb_hal_context_t *usb)
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{
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/* usb_periph_iopins currently configures USB_OTG as USB Device.
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* Introduce additional parameters in usb_hal_context_t when adding support
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* for USB Host.
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*/
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for (const usb_iopin_dsc_t *iopin = usb_periph_iopins; iopin->pin != -1; ++iopin) {
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if ((usb->use_external_phy) || (iopin->ext_phy_only == 0)) {
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esp_rom_gpio_pad_select_gpio(iopin->pin);
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if (iopin->is_output) {
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esp_rom_gpio_connect_out_signal(iopin->pin, iopin->func, false, false);
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} else {
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esp_rom_gpio_connect_in_signal(iopin->pin, iopin->func, false);
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#if ESP_IDF_VERSION_MAJOR > 4
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if ((iopin->pin != GPIO_MATRIX_CONST_ZERO_INPUT) && (iopin->pin != GPIO_MATRIX_CONST_ONE_INPUT))
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#else
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if ((iopin->pin != GPIO_FUNC_IN_LOW) && (iopin->pin != GPIO_FUNC_IN_HIGH))
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#endif
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{
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gpio_ll_input_enable(&GPIO, iopin->pin);
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}
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}
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esp_rom_gpio_pad_unhold(iopin->pin);
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}
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}
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if (!usb->use_external_phy) {
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gpio_set_drive_capability(USBPHY_DM_NUM, GPIO_DRIVE_CAP_3);
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gpio_set_drive_capability(USBPHY_DP_NUM, GPIO_DRIVE_CAP_3);
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}
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}
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// Turn LED on or off
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void board_led_write(bool state)
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{
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#ifdef NEOPIXEL_PIN
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strip->set_pixel(strip, 0, (state ? 0x88 : 0x00), 0x00, 0x00);
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strip->refresh(strip, 100);
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#endif
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#ifdef LED_PIN
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gpio_set_level(LED_PIN, state ? LED_ACTIVE : !LED_ACTIVE);
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#endif
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}
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// Get the current state of button
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// a '1' means active (pressed), a '0' means inactive.
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uint32_t board_button_read(void)
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{
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return gpio_get_level(BUTTON_PIN) == BUTTON_STATE_ACTIVE;
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}
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// Get characters from UART
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int board_uart_read(uint8_t* buf, int len)
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{
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(void) buf; (void) len;
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return 0;
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}
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// Send characters to UART
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int board_uart_write(void const * buf, int len)
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{
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esp_rom_printf(buf);
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(void) buf; (void) len;
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return 0;
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}
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