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third_party/tinyusb/hw/bsp/stm32c5/boards/stm32c542nucleo/board.h

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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026, HiFiPhile
+ *
+ * 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:
+   name: STM32C542 Nucleo
+   url: https://www.st.com/en/evaluation-tools/nucleo-c542rc.html
+*/
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+// LED
+#define LED_PORT         HAL_GPIOA
+#define LED_PIN          HAL_GPIO_PIN_5
+
+// Button
+#define BUTTON_PORT           HAL_GPIOC
+#define BUTTON_PIN            HAL_GPIO_PIN_13
+#define BUTTON_STATE_ACTIVE   1
+
+// Enable UART serial communication with the ST-Link
+#define UART_ID               2
+#define UART_GPIO_PORT        HAL_GPIOA
+#define UART_GPIO_AF          HAL_GPIO_AF_7
+#define UART_TX_PIN           HAL_GPIO_PIN_2
+#define UART_RX_PIN           HAL_GPIO_PIN_3
+
+static inline void board_clock_init(void) {
+  HAL_RCC_HSE_Enable(HAL_RCC_HSE_ON);
+
+  hal_rcc_psi_config_t config_psi;
+  config_psi.psi_source = HAL_RCC_PSI_SRC_HSE;
+  config_psi.psi_ref = HAL_RCC_PSI_REF_24MHZ;
+  config_psi.psi_out = HAL_RCC_PSI_OUT_144MHZ;
+  HAL_RCC_PSI_SetConfig(&config_psi);
+  HAL_RCC_PSIS_Enable();
+
+  /** Initializes the CPU, AHB and APB busses clocks */
+  hal_rcc_bus_clk_config_t config_bus;
+  config_bus.hclk_prescaler  = HAL_RCC_HCLK_PRESCALER1;
+  config_bus.pclk1_prescaler = HAL_RCC_PCLK_PRESCALER1;
+  config_bus.pclk2_prescaler = HAL_RCC_PCLK_PRESCALER1;
+  config_bus.pclk3_prescaler = HAL_RCC_PCLK_PRESCALER1;
+  HAL_RCC_SetBusClockConfig(&config_bus);
+
+  /** Frequency will be increased */
+  HAL_FLASH_ITF_SetLatency(HAL_FLASH, HAL_FLASH_ITF_LATENCY_4);
+
+  HAL_RCC_SetSYSCLKSource(HAL_RCC_SYSCLK_SRC_PSIS);
+
+  HAL_FLASH_ITF_SetProgrammingDelay(HAL_FLASH, HAL_FLASH_ITF_PROGRAM_DELAY_2);
+
+  HAL_UpdateCoreClock();
+
+  HAL_RCC_USART2_SetKernelClkSource(HAL_RCC_USART2_CLK_SRC_PCLK1);
+
+  HAL_RCC_PSIDIV3_Enable();
+  HAL_RCC_CK48_SetKernelClkSource(HAL_RCC_CK48_CLK_SRC_PSIDIV3);
+}
+#endif /* BOARD_H_ */