169 lines
5.1 KiB
C
169 lines
5.1 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
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Copyright (C) 2020 Yaotian Feng
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_lld.h
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* @brief HT32 HAL subsystem low level driver header.
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*
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* @addtogroup HAL
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* @{
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*/
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#ifndef _HAL_LLD_H_
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#define _HAL_LLD_H_
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#include "ht32_registry.h"
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#include "nvic.h"
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/**
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* @name Platform identification macros
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* @{
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*/
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#define PLATFORM_NAME "HT32"
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/** @} */
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name PLATFORM configuration options
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* @{
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*/
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*
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* Configuration-related checks.
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*/
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#if !defined(HT32F52342_MCUCONF) && !defined(HT32F52352_MCUCONF) && \
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!defined(HT32F523x2_MCUCONF)
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#error "Using a wrong mcuconf.h file, HT32_MCUCONF not defined"
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#endif
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#define HT32_CK_HSI_FREQUENCY 8000000UL // 8 MHz
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#if HT32_CKCU_SW == CKCU_GCCR_SW_HSI
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#define HT32_CK_SYS_FREQUENCY HT32_CK_HSI_FREQUENCY
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#elif HT32_CKCU_SW == CKCU_GCCR_SW_HSE
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#if !defined(HT32_CK_HSE_FREQUENCY)
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#error "HT32_CK_HSE_FREQUENCY must be defined"
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#endif
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#define HT32_CK_SYS_FREQUENCY HT32_CK_HSE_FREQUENCY
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#elif HT32_CKCU_SW == CKCU_GCCR_SW_PLL
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#if !defined(HT32_PLL_USE_HSE)
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#error "HT32_PLL_USE_HSE must be defined"
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#endif
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#if HT32_PLL_USE_HSE == TRUE
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#if !defined(HT32_CK_HSE_FREQUENCY)
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#error "HT32_CK_HSE_FREQUENCY must be defined"
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#endif
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#define HT32_PLL_IN_FREQ HT32_CK_HSE_FREQUENCY
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#else
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#define HT32_PLL_IN_FREQ HT32_CK_HSI_FREQUENCY
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#endif
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#if !defined(HT32_PLL_FBDIV)
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#error "HT32_PLL_FBDIV must be defined"
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#endif
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#if !defined(HT32_PLL_OTDIV)
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#error "HT32_PLL_OTDIV must be defined"
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#endif
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#define HT32_CK_PLL_FREQUENCY ((HT32_PLL_IN_FREQ * HT32_PLL_FBDIV) / (1 << HT32_PLL_OTDIV))
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#define HT32_CK_SYS_FREQUENCY HT32_CK_PLL_FREQUENCY
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#else
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#error "HT32_CKCU_SW is invalid"
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#endif
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#if !defined(HT32_AHB_PRESCALER)
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#define HT32_AHB_PRESCALER 1
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#endif
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// AHB clock
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#define HT32_CK_AHB_FREQUENCY (HT32_CK_SYS_FREQUENCY / HT32_AHB_PRESCALER) // Max 48 MHz
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// SysTick (may also use HCLK)
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#define HT32_STCLK_FREQUENCY (HT32_CK_AHB_FREQUENCY / 8) // Max 8MHz
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// CPU clock
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#define HT32_HCLK_FREQUENCY HT32_CK_AHB_FREQUENCY
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// Peripheral clocks
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#define HT32_PCLK_FREQUENCY HT32_CK_AHB_FREQUENCY
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// Checks
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#if HT32_CK_SYS_FREQUENCY > 48000000
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#error "HT32 CK_SYS invalid"
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#endif
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#if HT32_CK_AHB_FREQUENCY > 48000000
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#error "HT32 CK_AHB invalid"
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#endif
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#if HAL_USE_UART == TRUE || HAL_USE_SERIAL == TRUE
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#define HT32_CK_USART_FREQUENCY (HT32_CK_AHB_FREQUENCY / HT32_USART_PRESCALER) // Max 48 MHz
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#if HT32_CK_USART_FREQUENCY > 48000000
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#error "HT32 CK_USART invalid"
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#endif
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#endif
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#if HAL_USE_USB == TRUE
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#if HT32_CKCU_SW != CKCU_GCCR_SW_PLL
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#error "HT32 USB requires PLL"
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#endif
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#define HT32_CK_USB_FREQUENCY (HT32_CK_PLL_FREQUENCY / HT32_USB_PRESCALER) // Max 48 MHz
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#if HT32_CK_USB_FREQUENCY > 48000000
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#error "HT32 CK_USB invalid"
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#endif
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void hal_lld_init(void);
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void ht32_clock_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _HAL_LLD_H_ */
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/** @} */
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