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