lib: Update stm32f1 code to version 1.8.0

Update the stm32f1 code to the latest from ST.  Merge the
lib/cmsis-stm32f1/ and lib/hal-stm32f1/ into a single lib/stm32f1/
directory.  Document all the differences from the pristine upstream
code.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 221 insertions, 0 deletions

diff --git a/lib/stm32f1/hal/source/stm32f1xx_ll_i2c.c b/lib/stm32f1/hal/source/stm32f1xx_ll_i2c.c
new file mode 100644
index 00000000..21440081
--- /dev/null
+++ b/lib/stm32f1/hal/source/stm32f1xx_ll_i2c.c
@@ -0,0 +1,221 @@
+/**

+  ******************************************************************************

+  * @file    stm32f1xx_ll_i2c.c

+  * @author  MCD Application Team

+  * @brief   I2C LL module driver.

+  ******************************************************************************

+  * @attention

+  *

+  * <h2><center>&copy; Copyright (c) 2016 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 "stm32f1xx_ll_i2c.h"

+#include "stm32f1xx_ll_bus.h"

+#include "stm32f1xx_ll_rcc.h"

+#ifdef  USE_FULL_ASSERT

+#include "stm32_assert.h"

+#else

+#define assert_param(expr) ((void)0U)

+#endif

+

+/** @addtogroup STM32F1xx_LL_Driver

+  * @{

+  */

+

+#if defined (I2C1) || defined (I2C2)

+

+/** @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_CLOCK_SPEED(__VALUE__)           (((__VALUE__) > 0U) && ((__VALUE__) <= LL_I2C_MAX_SPEED_FAST))

+

+#define IS_LL_I2C_DUTY_CYCLE(__VALUE__)            (((__VALUE__) == LL_I2C_DUTYCYCLE_2) || \

+                                                 ((__VALUE__) == LL_I2C_DUTYCYCLE_16_9))

+

+#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

+  */

+uint32_t 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);

+  }

+#if defined(I2C2)

+  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);

+

+  }

+#endif /* I2C2 */

+  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

+  */

+uint32_t LL_I2C_Init(I2C_TypeDef *I2Cx, LL_I2C_InitTypeDef *I2C_InitStruct)

+{

+  LL_RCC_ClocksTypeDef rcc_clocks;

+

+  /* 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_CLOCK_SPEED(I2C_InitStruct->ClockSpeed));

+  assert_param(IS_LL_I2C_DUTY_CYCLE(I2C_InitStruct->DutyCycle));

+  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);

+

+  /* Retrieve Clock frequencies */

+  LL_RCC_GetSystemClocksFreq(&rcc_clocks);

+

+  /*---------------------------- I2Cx SCL Clock Speed Configuration ------------

+   * Configure the SCL speed :

+   * - ClockSpeed: I2C_CR2_FREQ[5:0], I2C_TRISE_TRISE[5:0], I2C_CCR_FS,

+   *           and I2C_CCR_CCR[11:0] bits

+   * - DutyCycle: I2C_CCR_DUTY[7:0] bits

+   */

+  LL_I2C_ConfigSpeed(I2Cx, rcc_clocks.PCLK1_Frequency, I2C_InitStruct->ClockSpeed, I2C_InitStruct->DutyCycle);

+

+  /*---------------------------- I2Cx OAR1 Configuration -----------------------

+   * Disable, Configure and Enable I2Cx device own address 1 with parameters :

+   * - OwnAddress1:  I2C_OAR1_ADD[9:8], I2C_OAR1_ADD[7:1] and I2C_OAR1_ADD0 bits

+   * - OwnAddrSize:  I2C_OAR1_ADDMODE bit

+   */

+  LL_I2C_SetOwnAddress1(I2Cx, I2C_InitStruct->OwnAddress1, I2C_InitStruct->OwnAddrSize);

+

+  /*---------------------------- I2Cx MODE Configuration -----------------------

+  * Configure I2Cx peripheral mode with parameter :

+   * - PeripheralMode: I2C_CR1_SMBUS, I2C_CR1_SMBTYPE and I2C_CR1_ENARP bits

+   */

+  LL_I2C_SetMode(I2Cx, I2C_InitStruct->PeripheralMode);

+

+  /* Enable the selected I2Cx Peripheral */

+  LL_I2C_Enable(I2Cx);

+

+  /*---------------------------- 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->ClockSpeed      = 5000U;

+  I2C_InitStruct->DutyCycle       = LL_I2C_DUTYCYCLE_2;

+  I2C_InitStruct->OwnAddress1     = 0U;

+  I2C_InitStruct->TypeAcknowledge = LL_I2C_NACK;

+  I2C_InitStruct->OwnAddrSize     = LL_I2C_OWNADDRESS1_7BIT;

+}

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+#endif /* I2C1 || I2C2 */

+

+/**

+  * @}

+  */

+

+#endif /* USE_FULL_LL_DRIVER */

+

+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/