ADC DRIVER

ADC driver reusable in different platforms. For DMA mode only.

Supported Hardware

• [PSU]
• [supported]
• [supported]

Functions Guide

• adc_initialize: initializes the ADC conversion.
• adc_deinitialize: deinitializes the ADC conversion.
• adc_get_value: starts the conversion.
• stop_adc:stops the conversion.

How to use

• Set the ADC peripheral in the .ioc file
• Include the header file drv_adc.h
• Copy the drv_adc_config.h.template in a parent folder, rename it to drv_adc_config.h and modify it accordingly.
• Create the adc_t instances. The following members of the structure must be defined:
  • instance.value: address for the converted value.
  • instance.dma_storage_sz: DMA storage size.
  • instance.max_adc_channels: maximum number of ADC channels you want to use.
  • instance.handler: handler of choice (ex. hadc1).
  • instance.mx_init : ADC initializing function generated by the configuration tool.
• Use the function: - adc_initialize() To start the conversion and save the converted value.
  • adc_get_value() To retrieve the values of an ADC_input (defined in the configuration file).

Example

Let's consider a NUCLEO - L552ZE-Q. ADC1 has been enabled in the .ioc file.

• Define the inputs enum in the configuration file

/*!
	@file   drv_adc_config.h
*/
/******************************************************************************
* Preprocessor Definitions & Macros
******************************************************************************/

#define ENUM_ADC_Input
typedef enum
{
	ADC_V12A_MEAS   = 0x10,
	ADC_V12B_MEAS 	= 0x11,
}ADC_Input;

/******************************************************************************
* EOF - NO CODE AFTER THIS LINE
******************************************************************************/

• Create the ADC handler

adc_t adc1 = {.mx_init = MX_ADC1_Init , .dma_storage_sz = 100, .handler = &hadc1, .max_adc_channels = 4};

• Initialize the handler

adc_initialize(&adc1);

• Retrieve the specified value

uint16_t value;
adc_get_value(&adc1, ADC_V12A_MEAS, &value);