diff options
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_ll_i2c.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_ll_i2c.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_ll_i2c.c b/bsps/arm/stm32h7/hal/stm32h7xx_ll_i2c.c new file mode 100644 index 0000000000..d10c71efeb --- /dev/null +++ b/bsps/arm/stm32h7/hal/stm32h7xx_ll_i2c.c @@ -0,0 +1,243 @@ +/**
+ ******************************************************************************
+ * @file stm32h7xx_ll_i2c.c
+ * @author MCD Application Team
+ * @brief I2C LL module driver.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+#if defined(USE_FULL_LL_DRIVER)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_ll_i2c.h"
+#include "stm32h7xx_ll_bus.h"
+#ifdef USE_FULL_ASSERT
+#include "stm32_assert.h"
+#else
+#define assert_param(expr) ((void)0U)
+#endif
+
+/** @addtogroup STM32H7xx_LL_Driver
+ * @{
+ */
+
+#if defined (I2C1) || defined (I2C2) || defined (I2C3) || defined (I2C4)
+
+/** @defgroup I2C_LL I2C
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @addtogroup I2C_LL_Private_Macros
+ * @{
+ */
+
+#define IS_LL_I2C_PERIPHERAL_MODE(__VALUE__) (((__VALUE__) == LL_I2C_MODE_I2C) || \
+ ((__VALUE__) == LL_I2C_MODE_SMBUS_HOST) || \
+ ((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE) || \
+ ((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE_ARP))
+
+#define IS_LL_I2C_ANALOG_FILTER(__VALUE__) (((__VALUE__) == LL_I2C_ANALOGFILTER_ENABLE) || \
+ ((__VALUE__) == LL_I2C_ANALOGFILTER_DISABLE))
+
+#define IS_LL_I2C_DIGITAL_FILTER(__VALUE__) ((__VALUE__) <= 0x0000000FU)
+
+#define IS_LL_I2C_OWN_ADDRESS1(__VALUE__) ((__VALUE__) <= 0x000003FFU)
+
+#define IS_LL_I2C_TYPE_ACKNOWLEDGE(__VALUE__) (((__VALUE__) == LL_I2C_ACK) || \
+ ((__VALUE__) == LL_I2C_NACK))
+
+#define IS_LL_I2C_OWN_ADDRSIZE(__VALUE__) (((__VALUE__) == LL_I2C_OWNADDRESS1_7BIT) || \
+ ((__VALUE__) == LL_I2C_OWNADDRESS1_10BIT))
+/**
+ * @}
+ */
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup I2C_LL_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup I2C_LL_EF_Init
+ * @{
+ */
+
+/**
+ * @brief De-initialize the I2C registers to their default reset values.
+ * @param I2Cx I2C Instance.
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: I2C registers are de-initialized
+ * - ERROR: I2C registers are not de-initialized
+ */
+ErrorStatus LL_I2C_DeInit(I2C_TypeDef *I2Cx)
+{
+ ErrorStatus status = SUCCESS;
+
+ /* Check the I2C Instance I2Cx */
+ assert_param(IS_I2C_ALL_INSTANCE(I2Cx));
+
+ if (I2Cx == I2C1)
+ {
+ /* Force reset of I2C clock */
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C1);
+
+ /* Release reset of I2C clock */
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C1);
+ }
+ else if (I2Cx == I2C2)
+ {
+ /* Force reset of I2C clock */
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C2);
+
+ /* Release reset of I2C clock */
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C2);
+
+ }
+ else if (I2Cx == I2C3)
+ {
+ /* Force reset of I2C clock */
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C3);
+
+ /* Release reset of I2C clock */
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C3);
+ }
+ else if (I2Cx == I2C4)
+ {
+ /* Force reset of I2C clock */
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_I2C4);
+
+ /* Release reset of I2C clock */
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_I2C4);
+ }
+ else
+ {
+ status = ERROR;
+ }
+
+ return status;
+}
+
+/**
+ * @brief Initialize the I2C registers according to the specified parameters in I2C_InitStruct.
+ * @param I2Cx I2C Instance.
+ * @param I2C_InitStruct pointer to a @ref LL_I2C_InitTypeDef structure.
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: I2C registers are initialized
+ * - ERROR: Not applicable
+ */
+ErrorStatus LL_I2C_Init(I2C_TypeDef *I2Cx, LL_I2C_InitTypeDef *I2C_InitStruct)
+{
+ /* Check the I2C Instance I2Cx */
+ assert_param(IS_I2C_ALL_INSTANCE(I2Cx));
+
+ /* Check the I2C parameters from I2C_InitStruct */
+ assert_param(IS_LL_I2C_PERIPHERAL_MODE(I2C_InitStruct->PeripheralMode));
+ assert_param(IS_LL_I2C_ANALOG_FILTER(I2C_InitStruct->AnalogFilter));
+ assert_param(IS_LL_I2C_DIGITAL_FILTER(I2C_InitStruct->DigitalFilter));
+ assert_param(IS_LL_I2C_OWN_ADDRESS1(I2C_InitStruct->OwnAddress1));
+ assert_param(IS_LL_I2C_TYPE_ACKNOWLEDGE(I2C_InitStruct->TypeAcknowledge));
+ assert_param(IS_LL_I2C_OWN_ADDRSIZE(I2C_InitStruct->OwnAddrSize));
+
+ /* Disable the selected I2Cx Peripheral */
+ LL_I2C_Disable(I2Cx);
+
+ /*---------------------------- I2Cx CR1 Configuration ------------------------
+ * Configure the analog and digital noise filters with parameters :
+ * - AnalogFilter: I2C_CR1_ANFOFF bit
+ * - DigitalFilter: I2C_CR1_DNF[3:0] bits
+ */
+ LL_I2C_ConfigFilters(I2Cx, I2C_InitStruct->AnalogFilter, I2C_InitStruct->DigitalFilter);
+
+ /*---------------------------- I2Cx TIMINGR Configuration --------------------
+ * Configure the SDA setup, hold time and the SCL high, low period with parameter :
+ * - Timing: I2C_TIMINGR_PRESC[3:0], I2C_TIMINGR_SCLDEL[3:0], I2C_TIMINGR_SDADEL[3:0],
+ * I2C_TIMINGR_SCLH[7:0] and I2C_TIMINGR_SCLL[7:0] bits
+ */
+ LL_I2C_SetTiming(I2Cx, I2C_InitStruct->Timing);
+
+ /* Enable the selected I2Cx Peripheral */
+ LL_I2C_Enable(I2Cx);
+
+ /*---------------------------- I2Cx OAR1 Configuration -----------------------
+ * Disable, Configure and Enable I2Cx device own address 1 with parameters :
+ * - OwnAddress1: I2C_OAR1_OA1[9:0] bits
+ * - OwnAddrSize: I2C_OAR1_OA1MODE bit
+ */
+ LL_I2C_DisableOwnAddress1(I2Cx);
+ LL_I2C_SetOwnAddress1(I2Cx, I2C_InitStruct->OwnAddress1, I2C_InitStruct->OwnAddrSize);
+
+ /* OwnAdress1 == 0 is reserved for General Call address */
+ if (I2C_InitStruct->OwnAddress1 != 0U)
+ {
+ LL_I2C_EnableOwnAddress1(I2Cx);
+ }
+
+ /*---------------------------- I2Cx MODE Configuration -----------------------
+ * Configure I2Cx peripheral mode with parameter :
+ * - PeripheralMode: I2C_CR1_SMBDEN and I2C_CR1_SMBHEN bits
+ */
+ LL_I2C_SetMode(I2Cx, I2C_InitStruct->PeripheralMode);
+
+ /*---------------------------- I2Cx CR2 Configuration ------------------------
+ * Configure the ACKnowledge or Non ACKnowledge condition
+ * after the address receive match code or next received byte with parameter :
+ * - TypeAcknowledge: I2C_CR2_NACK bit
+ */
+ LL_I2C_AcknowledgeNextData(I2Cx, I2C_InitStruct->TypeAcknowledge);
+
+ return SUCCESS;
+}
+
+/**
+ * @brief Set each @ref LL_I2C_InitTypeDef field to default value.
+ * @param I2C_InitStruct Pointer to a @ref LL_I2C_InitTypeDef structure.
+ * @retval None
+ */
+void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct)
+{
+ /* Set I2C_InitStruct fields to default values */
+ I2C_InitStruct->PeripheralMode = LL_I2C_MODE_I2C;
+ I2C_InitStruct->Timing = 0U;
+ I2C_InitStruct->AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
+ I2C_InitStruct->DigitalFilter = 0U;
+ I2C_InitStruct->OwnAddress1 = 0U;
+ I2C_InitStruct->TypeAcknowledge = LL_I2C_NACK;
+ I2C_InitStruct->OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* I2C1 || I2C2 || I2C3 || I2C4 */
+
+/**
+ * @}
+ */
+
+#endif /* USE_FULL_LL_DRIVER */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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