aboutsummaryrefslogtreecommitdiff
path: root/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c
diff options
context:
space:
mode:
Diffstat (limited to 'thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c')
-rw-r--r--thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c458
1 files changed, 458 insertions, 0 deletions
diff --git a/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c
new file mode 100644
index 0000000..db14977
--- /dev/null
+++ b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Utilities/STM32_EVAL/STM32373C_EVAL/stm32373c_eval_i2c_tsensor_cpal.c
@@ -0,0 +1,458 @@
+/**
+ ******************************************************************************
+ * @file stm32373c_eval_i2c_tsensor_cpal.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 20-September-2012
+ * @brief This file provides a set of functions needed to manage the I2C LM75
+ * temperature sensor mounted on STM32373C-EVAL board .
+ * It implements a high level communication layer for read and write
+ * from/to this sensor.
+ *
+ * @note This file is a modified version of stm32373c_eval_i2c_tsensor.c driver;
+ * I2C CPAL library drivers are used instead of the Standard Peripherals
+ * I2C driver.
+ *
+ *
+ * +-----------------------------------------------------------------+
+ * | Pin assignment |
+ * +---------------------------------------+-----------+-------------+
+ * | STM32 I2C Pins | STLM75 | Pin |
+ * +---------------------------------------+-----------+-------------+
+ * | LM75_I2C_SDA_PIN/ SDA | SDA | 1 |
+ * | LM75_I2C_SCL_PIN/ SCL | SCL | 2 |
+ * | | OS/INT | 3 |
+ * | . | GND | 4 (0V) |
+ * | . | GND | 5 (0V) |
+ * | . | GND | 6 (0V) |
+ * | . | GND | 7 (0V) |
+ * | . | VDD | 8 (3.3V)|
+ * +---------------------------------------+-----------+-------------+
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (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.st.com/software_license_agreement_liberty_v2
+ *
+ * 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.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32373c_eval_i2c_tsensor_cpal.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private defines -----------------------------------------------------------*/
+#define LM75_SD_SET 0x01 /*!< Set SD bit in the configuration register */
+#define LM75_SD_RESET 0xFE /*!< Reset SD bit in the configuration register */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+CPAL_TransferTypeDef LM75_RXTransfer = {
+ /* Initialize TX Transfer structure */
+ pNULL,
+ 0,
+ 0,
+ 0};
+
+CPAL_TransferTypeDef LM75_TXTransfer = {
+ /* Initialize RX Transfer structure */
+ pNULL,
+ 0,
+ 0,
+ 0};
+
+uint8_t LM75_Buffer[2] = {0x00,0x00};
+
+extern CPAL_InitTypeDef LM75_DevStructure;
+
+
+__IO uint32_t LM75_Timeout = LM75_TIMEOUT;
+
+/* Private function prototypes -----------------------------------------------*/
+static void LM75_StructInit(void);
+static void LM75_Init(void);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief Configure the LM75_I2C.
+ * @param None
+ * @retval None
+ */
+void LM75_Config(void)
+{
+ LM75_StructInit ();
+ LM75_Init();
+}
+
+/**
+ * @brief Deinitialize the LM75_I2C.
+ * @param None
+ * @retval None
+ */
+void LM75_DeInit(void)
+{
+ /* Initialize CPAL peripheral */
+ CPAL_I2C_DeInit(&LM75_DevStructure);
+}
+
+/**
+ * @brief Initializes the LM75_I2C.
+ * @param None
+ * @retval None
+ */
+static void LM75_Init(void)
+{
+ /* Initialize CPAL peripheral */
+ CPAL_I2C_Init(&LM75_DevStructure);
+}
+
+/**
+ * @brief Initializes the LM75_I2C.
+ * @param None
+ * @retval None
+ */
+static void LM75_StructInit(void)
+{
+ /* Set CPAL structure parameters to their default values */
+ CPAL_I2C_StructInit(&LM75_DevStructure);
+
+ /* Set I2C clock speed */
+ LM75_DevStructure.pCPAL_I2C_Struct->I2C_Timing = LM75_I2C_TIMING;
+
+#ifdef LM75_IT
+ /* Select Interrupt programming model */
+ LM75_DevStructure.CPAL_ProgModel = CPAL_PROGMODEL_INTERRUPT;
+#else
+ /* Select DMA programming model */
+ LM75_DevStructure.CPAL_ProgModel = CPAL_PROGMODEL_DMA;
+#endif /* LM75_IT */
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferTx = &LM75_TXTransfer;
+ LM75_DevStructure.pCPAL_TransferRx = &LM75_RXTransfer;
+}
+
+static uint32_t LM75_Status (void)
+{
+ LM75_DevStructure.pCPAL_TransferTx = &LM75_TXTransfer;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr1 = (uint32_t)LM75_ADDR;
+
+ return CPAL_I2C_IsDeviceReady(&LM75_DevStructure);
+}
+
+/**
+ * @brief Checks the LM75 status.
+ * @param None
+ * @retval ErrorStatus: LM75 Status (ERROR or SUCCESS).
+ */
+ErrorStatus LM75_GetStatus(void)
+{
+ /* Test if LM75 is ready */
+ while ((LM75_Status() == CPAL_FAIL) && LM75_Timeout)
+ {
+ LM75_Timeout--;
+ }
+
+ /* If LM75 is not responding return ERROR */
+ if (LM75_Timeout == 0)
+ {
+ return ERROR;
+ }
+
+ /* In other case return SUCCESS */
+ return SUCCESS;
+}
+/**
+ * @brief Read the specified register from the LM75.
+ * @param RegName: specifies the LM75 register to be read.
+ * This member can be one of the following values:
+ * - LM75_REG_TEMP: temperature register
+ * - LM75_REG_TOS: Over-limit temperature register
+ * - LM75_REG_THYS: Hysteresis temperature register
+ * @retval LM75 register value.
+ */
+uint16_t LM75_ReadReg(uint8_t RegName)
+{
+ uint16_t tmp = 0;
+
+ LM75_Buffer[0] = 0;
+ LM75_Buffer[1] = 0;
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferRx = &LM75_RXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferRx->wNumData = 2;
+ LM75_DevStructure.pCPAL_TransferRx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr2 = (uint32_t)RegName;
+
+ /* Read Operation */
+ if(CPAL_I2C_Read(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+ }
+
+ /* Store LM75_I2C received data */
+ tmp = (uint16_t)(LM75_Buffer[0] << 8);
+ tmp |= LM75_Buffer[1];
+
+ /* return a Reg value */
+ return (uint16_t)tmp;
+}
+
+/**
+ * @brief Write to the specified register of the LM75.
+ * @param RegName: specifies the LM75 register to be written.
+ * This member can be one of the following values:
+ * - LM75_REG_TOS: Over-limit temperature register
+ * - LM75_REG_THYS: Hysteresis temperature register
+ * @param RegValue: value to be written to LM75 register.
+ * @retval None
+ */
+uint8_t LM75_WriteReg(uint8_t RegName, uint16_t RegValue)
+{
+ LM75_Buffer[0] = (uint8_t)(RegValue >> 8);
+ LM75_Buffer[1] = (uint8_t)(RegValue);
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferTx = &LM75_TXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferTx->wNumData = 2;
+ LM75_DevStructure.pCPAL_TransferTx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr2 = (uint32_t)RegName;
+
+ /* Write Operation */
+ if(CPAL_I2C_Write(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+
+ if (LM75_DevStructure.CPAL_State == CPAL_STATE_ERROR)
+ {
+ return LM75_FAIL;
+ }
+ }
+ else
+ {
+ return LM75_FAIL;
+ }
+
+ return LM75_OK;
+}
+
+/**
+ * @brief Read Temperature register of LM75: double temperature value.
+ * @param None
+ * @retval LM75 measured temperature value.
+ */
+uint16_t LM75_ReadTemp(void)
+{
+ uint16_t tmp = 0;
+
+ LM75_Buffer[0] = 0;
+ LM75_Buffer[1] = 0;
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferRx = &LM75_RXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferRx->wNumData = 2;
+ LM75_DevStructure.pCPAL_TransferRx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr2 = (uint32_t)LM75_REG_TEMP;
+
+ /* Read Operation */
+ if(CPAL_I2C_Read(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+ }
+
+ /* Store LM75_I2C received data */
+ tmp = (uint16_t)(LM75_Buffer[0] << 8);
+ tmp |= LM75_Buffer[1];
+
+ /* Return Temperature value */
+ return (uint16_t)(tmp >> 7);
+}
+
+/**
+ * @brief Read the configuration register from the LM75.
+ * @param None
+ * @retval LM75 configuration register value.
+ */
+uint8_t LM75_ReadConfReg(void)
+{
+ LM75_Buffer[0] = 0;
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferRx = &LM75_RXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferRx->wNumData = 1;
+ LM75_DevStructure.pCPAL_TransferRx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr2 = (uint32_t)LM75_REG_CONF;
+
+ /* Read Operation */
+ if(CPAL_I2C_Read(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+ }
+
+ /* Return Temperature value */
+ return (uint8_t)LM75_Buffer[0];
+}
+
+/**
+ * @brief Write to the configuration register of the LM75.
+ * @param RegValue: specifies the value to be written to LM75 configuration
+ * register.
+ * @retval None
+ */
+uint8_t LM75_WriteConfReg(uint8_t RegValue)
+{
+ LM75_Buffer[0] = (uint8_t)(RegValue);
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferTx = &LM75_TXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferTx->wNumData = 1;
+ LM75_DevStructure.pCPAL_TransferTx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr2 = (uint32_t)LM75_REG_CONF;
+
+ /* Write Operation */
+ if(CPAL_I2C_Write(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+
+ if (LM75_DevStructure.CPAL_State == CPAL_STATE_ERROR)
+ {
+ return LM75_FAIL;
+ }
+ }
+ else
+ {
+ return LM75_FAIL;
+ }
+
+ return LM75_OK;
+
+}
+
+/**
+ * @brief Enables or disables the LM75.
+ * @param NewState: specifies the LM75 new status. This parameter can be ENABLE
+ * or DISABLE.
+ * @retval None
+ */
+uint8_t LM75_ShutDown(FunctionalState NewState)
+{
+ __IO uint8_t RegValue = 0;
+
+ LM75_Buffer[0] = 0;
+
+ /* Disable all options */
+ LM75_DevStructure.wCPAL_Options = 0;
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferRx = &LM75_RXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferRx->wNumData = 1;
+ LM75_DevStructure.pCPAL_TransferRx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferRx->wAddr2 = (uint32_t)LM75_REG_CONF;
+
+ /* Read Operation */
+ if(CPAL_I2C_Read(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+ }
+
+ /* Get received data */
+ RegValue = (uint8_t)LM75_Buffer[0];
+
+ /*---------------------------- Transmission Phase ---------------------------*/
+
+ /* Enable or disable SD bit */
+ if (NewState != DISABLE)
+ {
+ /* Enable LM75 */
+ LM75_Buffer[0] = RegValue & LM75_SD_RESET;
+ }
+ else
+ {
+ /* Disable LM75 */
+ LM75_Buffer[0] = RegValue | LM75_SD_SET;
+ }
+
+ /* point to CPAL_TransferTypeDef structure */
+ LM75_DevStructure.pCPAL_TransferTx = &LM75_TXTransfer;
+
+ /* Configure transfer parameters */
+ LM75_DevStructure.pCPAL_TransferTx->wNumData = 1;
+ LM75_DevStructure.pCPAL_TransferTx->pbBuffer = LM75_Buffer ;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr1 = (uint32_t)LM75_ADDR;
+ LM75_DevStructure.pCPAL_TransferTx->wAddr2 = (uint32_t)LM75_REG_CONF;
+
+ /* Write Operation */
+ if(CPAL_I2C_Write(&LM75_DevStructure) == CPAL_PASS)
+ {
+ while ((LM75_DevStructure.CPAL_State != CPAL_STATE_READY) && (LM75_DevStructure.CPAL_State != CPAL_STATE_ERROR) )
+ { }
+
+ if (LM75_DevStructure.CPAL_State == CPAL_STATE_ERROR)
+ {
+ return LM75_FAIL;
+ }
+ }
+ else
+ {
+ return LM75_FAIL;
+ }
+
+ return LM75_OK;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 07:23:17 +0000