stm32f30x_opamp.c File Reference

This file provides firmware functions to manage the following functionalities of the operational amplifiers (OPAMP1,...OPAMP4) peripheral: + OPAMP Configuration + OPAMP calibration. More...

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Detailed Description

This file provides firmware functions to manage the following functionalities of the operational amplifiers (OPAMP1,...OPAMP4) peripheral: + OPAMP Configuration + OPAMP calibration.

Author:

MCD Application Team

Version:

V1.2.3

Date:

10-July-2015

  
  ==============================================================================
                        ##### OPAMP Peripheral Features #####
  ==============================================================================
                   
  [..]
      The device integrates 4 operational amplifiers OPAMP1, OPAMP2, OPAMP3 and OPAMP4:
              
      (+) The OPAMPs non inverting input can be selected among the list shown by
          table below.
  
      (+) The OPAMPs inverting input can be selected among the list shown by
          table below.
  
      (+) The OPAMPs outputs can be internally connected to the inverting input 
          (follower mode)
      (+) The OPAMPs outputs can be internally connected to resistor feedback
          output (Programmable Gain Amplifier mode)
  
      (+) The OPAMPs outputs can be internally connected to ADC
  
      (+) The OPAMPs can be calibrated to compensate the offset compensation
  
      (+) Timer-controlled Mux for automatic switch of inverting and
          non-inverting input
  
  OPAMPs inverting/non-inverting inputs:
    +--------------------------------------------------------------+     
    |                 |        | OPAMP1 | OPAMP2 | OPAMP3 | OPAMP4 |
    |-----------------|--------|--------|--------|--------|--------|
    |                 | PGA    |  OK    |  OK    |  OK    |  OK    |
    | Inverting Input | Vout   |  OK    |  OK    |  OK    |  OK    |
    |                 | IO1    |  PC5   |  PC5   |  PB10  |  PB10  |
    |                 | IO2    |  PA3   |  PA5   |  PB2   |  PD8   |
    |-----------------|--------|--------|--------|--------|--------|
    |                 | IO1    |  PA7   |  PD14  |  PB13  |  PD11  |
    |  Non Inverting  | IO2    |  PA5   |  PB14  |  PA5   |  PB11  |
    |    Input        | IO3    |  PA3   |  PB0   |  PA1   |  PA4   |
    |                 | IO4    |  PA1   |  PA7   |  PB0   |  PB13  |
    +--------------------------------------------------------------+  
  
                        ##### How to use this driver #####
  ==============================================================================
  [..]
  This driver provides functions to configure and program the OPAMP 
  of all STM32F30x devices.
  
  To use the OPAMP, perform the following steps:
 
  (#) Enable the SYSCFG APB clock to get write access to OPAMP
      register using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  
  (#) Configure the OPAMP input in analog mode using GPIO_Init()
  
  (#) Configure the OPAMP using OPAMP_Init() function:
      (++) Select the inverting input
      (++) Select the non-inverting inverting input
    
  (#) Enable the OPAMP using OPAMP_Cmd() function
    
  

Attention:

© COPYRIGHT 2015 STMicroelectronics

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.

Definition in file stm32f30x_opamp.c.