1 files changed, 168 insertions, 0 deletions

diff --git a/lib/chibios-contrib/os/hal/ports/HT32/HT32F523xx/hal_lld.h b/lib/chibios-contrib/os/hal/ports/HT32/HT32F523xx/hal_lld.h
new file mode 100644
index 000000000..31a755412
--- /dev/null
+++ b/lib/chibios-contrib/os/hal/ports/HT32/HT32F523xx/hal_lld.h
@@ -0,0 +1,168 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+              Copyright (C) 2020 Yaotian Feng
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    hal_lld.h
+ * @brief   HT32 HAL subsystem low level driver header.
+ *
+ * @addtogroup HAL
+ * @{
+ */
+
+#ifndef _HAL_LLD_H_
+#define _HAL_LLD_H_
+
+#include "ht32_registry.h"
+#include "nvic.h"
+
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/**
+ * @name    Platform identification macros
+ * @{
+ */
+#define PLATFORM_NAME           "HT32"
+/** @} */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @name    PLATFORM configuration options
+ * @{
+ */
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*
+ * Configuration-related checks.
+ */
+#if !defined(HT32F52342_MCUCONF) && !defined(HT32F52352_MCUCONF) && \
+    !defined(HT32F523x2_MCUCONF)
+    #error "Using a wrong mcuconf.h file, HT32_MCUCONF not defined"
+#endif
+
+#define HT32_CK_HSI_FREQUENCY   8000000UL   // 8 MHz
+
+#if HT32_CKCU_SW == CKCU_GCCR_SW_HSI
+    #define HT32_CK_SYS_FREQUENCY   HT32_CK_HSI_FREQUENCY
+
+#elif HT32_CKCU_SW == CKCU_GCCR_SW_HSE
+    #if !defined(HT32_CK_HSE_FREQUENCY)
+        #error "HT32_CK_HSE_FREQUENCY must be defined"
+    #endif
+    #define HT32_CK_SYS_FREQUENCY   HT32_CK_HSE_FREQUENCY
+
+#elif HT32_CKCU_SW == CKCU_GCCR_SW_PLL
+    #if !defined(HT32_PLL_USE_HSE)
+        #error "HT32_PLL_USE_HSE must be defined"
+    #endif
+
+    #if HT32_PLL_USE_HSE == TRUE
+        #if !defined(HT32_CK_HSE_FREQUENCY)
+            #error "HT32_CK_HSE_FREQUENCY must be defined"
+        #endif
+        #define HT32_PLL_IN_FREQ    HT32_CK_HSE_FREQUENCY
+    #else
+        #define HT32_PLL_IN_FREQ    HT32_CK_HSI_FREQUENCY
+    #endif
+
+    #if !defined(HT32_PLL_FBDIV)
+        #error "HT32_PLL_FBDIV must be defined"
+    #endif
+    #if !defined(HT32_PLL_OTDIV)
+        #error "HT32_PLL_OTDIV must be defined"
+    #endif
+
+    #define HT32_CK_PLL_FREQUENCY   ((HT32_PLL_IN_FREQ * HT32_PLL_FBDIV) / (1 << HT32_PLL_OTDIV))
+    #define HT32_CK_SYS_FREQUENCY   HT32_CK_PLL_FREQUENCY
+
+#else
+    #error "HT32_CKCU_SW is invalid"
+#endif
+
+#if !defined(HT32_AHB_PRESCALER)
+    #define HT32_AHB_PRESCALER 1
+#endif
+
+// AHB clock
+#define HT32_CK_AHB_FREQUENCY   (HT32_CK_SYS_FREQUENCY / HT32_AHB_PRESCALER) // Max 48 MHz
+// SysTick (may also use HCLK)
+#define HT32_STCLK_FREQUENCY    (HT32_CK_AHB_FREQUENCY / 8) // Max 8MHz
+// CPU clock
+#define HT32_HCLK_FREQUENCY     HT32_CK_AHB_FREQUENCY
+// Peripheral clocks
+#define HT32_PCLK_FREQUENCY     HT32_CK_AHB_FREQUENCY
+
+// Checks
+#if HT32_CK_SYS_FREQUENCY > 48000000
+    #error "HT32 CK_SYS invalid"
+#endif
+#if HT32_CK_AHB_FREQUENCY > 48000000
+    #error "HT32 CK_AHB invalid"
+#endif
+
+#if HAL_USE_UART == TRUE || HAL_USE_SERIAL == TRUE
+    #define HT32_CK_USART_FREQUENCY (HT32_CK_AHB_FREQUENCY / HT32_USART_PRESCALER) // Max 48 MHz
+
+    #if HT32_CK_USART_FREQUENCY > 48000000
+        #error "HT32 CK_USART invalid"
+    #endif
+#endif
+
+#if HAL_USE_USB == TRUE
+    #if HT32_CKCU_SW != CKCU_GCCR_SW_PLL
+        #error "HT32 USB requires PLL"
+    #endif
+    #define HT32_CK_USB_FREQUENCY (HT32_CK_PLL_FREQUENCY / HT32_USB_PRESCALER) // Max 48 MHz
+
+    #if HT32_CK_USB_FREQUENCY > 48000000
+        #error "HT32 CK_USB invalid"
+    #endif
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void hal_lld_init(void);
+  void ht32_clock_init(void);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _HAL_LLD_H_ */
+
+/** @} */