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STM32F0 Standard Peripheral bibliotheek
1.0
ST Microelectronics standard peripheral bibliotheek documentatie voor de STM32F0 familie
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STM32F0 Standard Peripheral bibliotheek
1.0
ST Microelectronics standard peripheral bibliotheek documentatie voor de STM32F0 familie
|
This file provides firmware functions to manage the following functionalities of the Consumer Electronics Control (CEC) peripheral: More...
Macros | |
| #define | BROADCAST_ADDRESS ((uint32_t)0x0000F) |
| #define | CFGR_CLEAR_MASK ((uint32_t)0x7000FE00) /* CFGR register Mask */ |
Functions | |
| void | CEC_DeInit (void) |
| Deinitializes the CEC peripheral registers to their default reset values. More... | |
| void | CEC_Init (CEC_InitTypeDef *CEC_InitStruct) |
| Initializes the CEC peripheral according to the specified parameters in the CEC_InitStruct. More... | |
| void | CEC_StructInit (CEC_InitTypeDef *CEC_InitStruct) |
| Fills each CEC_InitStruct member with its default value. More... | |
| void | CEC_Cmd (FunctionalState NewState) |
| Enables or disables the CEC peripheral. More... | |
| void | CEC_ListenModeCmd (FunctionalState NewState) |
| Enables or disables the CEC Listen Mode. More... | |
| void | CEC_OwnAddressConfig (uint8_t CEC_OwnAddress) |
| Defines the Own Address of the CEC device. More... | |
| void | CEC_OwnAddressClear (void) |
| Clears the Own Address of the CEC device. More... | |
| void | CEC_SendData (uint8_t Data) |
| Transmits single data through the CEC peripheral. More... | |
| uint8_t | CEC_ReceiveData (void) |
| Returns the most recent received data by the CEC peripheral. More... | |
| void | CEC_StartOfMessage (void) |
| Starts a new message. More... | |
| void | CEC_EndOfMessage (void) |
| Transmits message with an EOM bit. More... | |
| void | CEC_ITConfig (uint16_t CEC_IT, FunctionalState NewState) |
| Enables or disables the selected CEC interrupts. More... | |
| FlagStatus | CEC_GetFlagStatus (uint16_t CEC_FLAG) |
| Gets the CEC flag status. More... | |
| void | CEC_ClearFlag (uint32_t CEC_FLAG) |
| Clears the CEC's pending flags. More... | |
| ITStatus | CEC_GetITStatus (uint16_t CEC_IT) |
| Checks whether the specified CEC interrupt has occurred or not. More... | |
| void | CEC_ClearITPendingBit (uint16_t CEC_IT) |
| Clears the CEC's interrupt pending bits. More... | |
This file provides firmware functions to manage the following functionalities of the Consumer Electronics Control (CEC) peripheral:
==============================================================================
##### CEC features #####
==============================================================================
[..] This device provides some features:
(#) Supports HDMI-CEC specification 1.4.
(#) Supports two source clocks(HSI/244 or LSE).
(#) Works in stop mode(without APB clock, but with CEC clock 32KHz).
It can genarate an interrupt in the CEC clock domain that the CPU
wakes up from the low power mode.
(#) Configurable Signal Free Time before of transmission start. The
number of nominal data bit periods waited before transmission can be
ruled by Hardware or Software.
(#) Configurable Peripheral Address (multi-addressing configuration).
(#) Supports listen mode.The CEC Messages addressed to different destination
can be received without interfering with CEC bus when Listen mode option is enabled.
(#) Configurable Rx-Tolerance(Standard and Extended tolerance margin).
(#) Error detection with configurable error bit generation.
(#) Arbitration lost error in the case of two CEC devices starting at the same time.
##### How to use this driver #####
==============================================================================
[..] This driver provides functions to configure and program the CEC device,
follow steps below:
(#) The source clock can be configured using:
(++) RCC_CECCLKConfig(RCC_CECCLK_HSI_Div244) for HSI(Default)
(++) RCC_CECCLKConfig(RCC_CECCLK_LSE) for LSE.
(#) Enable CEC peripheral clock using RCC_APBPeriphClockCmd(RCC_APBPeriph_CEC, ENABLE).
(#) Peripherals alternate function.
(++) Connect the pin to the desired peripherals' Alternate Function (AF) using
GPIO_PinAFConfig() function.
(++) Configure the desired pin in alternate function by:
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF.
(++) Select the type open-drain and output speed via GPIO_OType
and GPIO_Speed members.
(++) Call GPIO_Init() function.
(#) Configure the Signal Free Time, Rx Tolerance, Stop reception generation
and Bit error generation using the CEC_Init() function.
The function CEC_Init() must be called when the CEC peripheral is disabled.
(#) Configure the CEC own address by calling the fuction CEC_OwnAddressConfig().
(#) Optionally, you can configure the Listen mode using the function CEC_ListenModeCmd().
(#) Enable the NVIC and the corresponding interrupt using the function
CEC_ITConfig() if you need to use interrupt mode.
CEC_ITConfig() must be called before enabling the CEC peripheral.
(#) Enable the CEC using the CEC_Cmd() function.
(#) Charge the first data byte in the TXDR register using CEC_SendDataByte().
(#) Enable the transmission of the Byte of a CEC message using CEC_StartOfMessage()
(#) Transmit single data through the CEC peripheral using CEC_SendDataByte()
and Receive the last transmitted byte using CEC_ReceiveDataByte().
(#) Enable the CEC_EndOfMessage() in order to indicate the last byte of the message.
[..]
(@) If the listen mode is enabled, Stop reception generation and Bit error generation
must be in reset state.
(@) If the CEC message consists of only 1 byte, the function CEC_EndOfMessage()
must be called before CEC_StartOfMessage().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.
1.8.3.1