BeRTOS
Functions
adc_lm3s.c File Reference

ADC hardware-specific implementation. More...

#include "adc_lm3s.h"
#include <cpu/irq.h>
#include "cfg/cfg_adc.h"
#include "cfg/cfg_proc.h"
#include "cfg/cfg_signal.h"
#include <cfg/macros.h>
#include <cfg/compiler.h>
#include <cfg/debug.h>
#include <cfg/log.h>
#include <drv/adc.h>
#include <drv/timer.h>
#include <drv/clock_lm3s.h>
#include <io/lm3s.h>

Go to the source code of this file.

Functions

void adc_hw_select_ch (uint8_t ch)
 Select mux channel ch.
uint16_t adc_hw_read (void)
 Start an ADC convertion.
void adc_hw_init (void)
 Init ADC hardware.

Detailed Description

ADC hardware-specific implementation.

This ADC module should be use both whit kernel or none. If you are using a kernel, the adc drive does not wait the finish of conversion but use a singal every time a required conversion are ended. This signal wake up a process that return a result of conversion. Otherwise, if you not use a kernl, this module wait whit a loop the finishing of conversion.

Author:
Daniele Basile <asterix@develer.com>

Definition in file adc_lm3s.c.


Function Documentation

uint16_t adc_hw_read ( void  )

Start an ADC convertion.

If a kernel is present, preempt until convertion is complete, otherwise a busy wait on ADC_DRDY bit is done.

Definition at line 147 of file adc_lm3s.c.

void adc_hw_select_ch ( uint8_t  ch)

Select mux channel ch.

Generally the stm32 cpu family allow us to program the order of adc channel that we want to read. In this driver implementation we put as fist channel to read the select ones.

Definition at line 132 of file adc_lm3s.c.