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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2024 TinyUSB contributors
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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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/* metadata:
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manufacturer: WCH
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*/
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// WCH SDK's DEBUG macro enables a _write() that conflicts with TinyUSB's.
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// TinyUSB uses UART1 for printf via debug_uart.c, so DEBUG is not needed.
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// If you need a different UART or want to keep SDK's DEBUG, modify
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// debug_uart.c (TinyUSB side) or CH58x_sys.c (SDK side) to remove one _write().
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// If done, remove this #error to continue.
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#ifdef DEBUG
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#error "Remove the DEBUG macro from preprocessor defines to avoid " \
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"duplicate _write() between WCH SDK and TinyUSB. " \
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"TinyUSB uses UART1 by default (see debug_uart.c)."
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#endif
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#include "debug_uart.h"
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#include "CH58x_common.h"
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#include "ch583_it.h"
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#include "bsp/board_api.h"
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#include "board.h"
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//--------------------------------------------------------------------+
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// Forward USB interrupt events to TinyUSB IRQ Handler
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//--------------------------------------------------------------------+
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// Device only: the shared dcd_ch32_usbfs.c drives USB0 (rhport 0). CH58x's second controller
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// (USB2 / rhport 1) was driven by the now-removed ch58x host driver; its handler is kept
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// commented out below to ease re-adding host support.
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__INTERRUPT __HIGH_CODE void USB_IRQHandler(void) {
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tusb_int_handler(0, true);
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}
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// __INTERRUPT __HIGH_CODE void USB2_IRQHandler(void) {
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// tusb_int_handler(1, true);
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// }
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//--------------------------------------------------------------------+
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// SysTick
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//--------------------------------------------------------------------+
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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__INTERRUPT __HIGH_CODE void SysTick_Handler(void) {
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SysTick->SR = 0;
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system_ticks++;
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}
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uint32_t tusb_time_millis_api(void) {
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return system_ticks;
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}
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#endif
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//--------------------------------------------------------------------+
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// Board Init
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//--------------------------------------------------------------------+
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void board_init(void) {
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// Disable interrupts during init
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PFIC_DisableAllIRQ();
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// Set system clock to PLL 60MHz (default for CH582)
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SetSysClock(CLK_SOURCE_PLL_60MHz);
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#if CFG_TUSB_OS == OPT_OS_NONE
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SysTick_Config(GetSysClock() / 1000);
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#endif
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// UART1 init for debug output
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#ifdef CFG_BOARD_UART_BAUDRATE
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usart_printf_init(CFG_BOARD_UART_BAUDRATE);
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#endif
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// LED
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#ifdef LED_PORT_IS_A
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GPIOA_ModeCfg(LED_PIN, GPIO_ModeOut_PP_5mA);
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#else
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GPIOB_ModeCfg(LED_PIN, GPIO_ModeOut_PP_5mA);
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#endif
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// Button
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#ifdef BUTTON_PIN
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#ifdef BUTTON_PORT_IS_A
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GPIOA_ModeCfg(BUTTON_PIN, GPIO_ModeIN_PU);
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#else
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GPIOB_ModeCfg(BUTTON_PIN, GPIO_ModeIN_PU);
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#endif
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#endif
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// Device only on USB0 (rhport 0): enable analog function for USB1 D+/D- and assert its D+
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// pull-up. The shared dcd_ch32_usbfs.c drives USB0; CH58x host / USB2 (rhport 1) is unsupported
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// here — to re-add host, also OR in RB_PIN_USB2_IE below.
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R16_PIN_ANALOG_IE |= RB_PIN_USB_IE; // | RB_PIN_USB2_IE (re-add for host on USB2)
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#if CFG_TUD_ENABLED
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R16_PIN_ANALOG_IE |= RB_PIN_USB_DP_PU;
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#endif
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// Keep USB clock active during sleep
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R8_SLP_CLK_OFF1 &= ~RB_SLP_CLK_USB;
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// Enable interrupts globally
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PFIC_EnableAllIRQ();
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board_delay(2);
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state) {
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#ifdef LED_PORT_IS_A
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if (state ^ LED_STATE_ON) {
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GPIOA_ResetBits(LED_PIN);
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} else {
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GPIOA_SetBits(LED_PIN);
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}
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#else
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if (state ^ LED_STATE_ON) {
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GPIOB_ResetBits(LED_PIN);
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} else {
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GPIOB_SetBits(LED_PIN);
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}
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#endif
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}
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uint32_t board_button_read(void) {
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#ifdef BUTTON_PIN
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#ifdef BUTTON_PORT_IS_A
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return BUTTON_STATE_ACTIVE == (GPIOA_ReadPortPin(BUTTON_PIN) ? 1 : 0);
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#else
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return BUTTON_STATE_ACTIVE == (GPIOB_ReadPortPin(BUTTON_PIN) ? 1 : 0);
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#endif
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#else
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return 0;
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#endif
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}
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// CH58x has no memory-mapped unique-ID register (unlike ch32v10x/v20x at 0x1FFFF7E8), but the
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// factory programs a unique 6-byte MAC address into FlashROM (it is a BLE part). GetMACAddress()
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// reads it via the ISP ROM command FLASH_EEPROM_CMD, which is provided by libISP583.a.
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size_t board_get_unique_id(uint8_t id[], size_t max_len) {
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// FLASH_EEPROM_CMD writes word-granular and requires a 4-byte-aligned buffer (CH58x_flash.c);
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// size 8 matches the SDK's GET_UNIQUE_ID buffer (6 MAC bytes + 2 it pads), so the read can't
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// run past the end whether it returns 6 or a full 8.
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TU_ATTR_ALIGNED(4) uint8_t mac[8];
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GetMACAddress(mac);
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size_t len = TU_MIN(max_len, (size_t) 6); // the 6-byte MAC is the unique part
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memcpy(id, mac, len);
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return len;
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}
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int board_uart_read(uint8_t* buf, int len) {
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(void) buf;
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(void) len;
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return 0;
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}
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int board_uart_write(void const* buf, int len) {
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int txsize = len;
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const char* bufc = (const char*) buf;
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while (txsize--) {
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uart_write(*bufc++);
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}
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uart_sync();
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return len;
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}
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