main.c File Reference

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_gpio.h"
#include "inc/hw_ssi.h"
#include "inc/hw_ints.h"
#include "inc/hw_timer.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/ssi.h"
#include "driverlib/interrupt.h"
#include "driverlib/timer.h"
#include "ADS1299.h"
#include "process.h"

Include dependency graph for main.c:

Macros
#define	IDLE   0
#define	ACQUIRE_EMG   1

Functions
void	DeviceInit (void)
	Function in charge of initializing the ALC-D system. More...
void	COMM_IntHandler (void)
	UART reception ISR for decoding and executing commands given by external master devices. More...
void	Timer0IntHandler (void)
	Timer ISR for ADS1299 samples acquisition. More...
void	Timer2IntHandler (void)
	Timer ISR for LED blinking. More...
void	Timer3IntHandler (void)
	Timer ISR for accessory operation. More...
int	main (void)
	Main function. More...

Variables
unsigned char	firmwareV [13] = {'1','.','5','-','1','1','/','1','0','/','1','6','~'}
unsigned char	serialN [6] = {'A','D','S','B','P','~'}
uint32_t	clockFreq = 0
volatile unsigned char	alcdState = IDLE
volatile unsigned char	timer
volatile uint32_t	sF = 1000
volatile unsigned char	nChannels
volatile unsigned char	filterEnable
const float32_t	lsbVolt
volatile unsigned char	btStatus
volatile float32_t	temperatureMCU
volatile float32_t	batteryVoltage
volatile float32_t	batteryTemperature
int32_t	priorityCOMM = 100
int32_t	priorityTMR0 = 100
int32_t	priorityTMR3 = 100
int32_t	priorityTMR2 = 100

Detailed Description

Main file and module of the ADS_BP project.

 ----------------— Function Description ---------------—
This module includes the main function, all ISRs as well
as the initialization of the device.
 ----------------------— Updates ----------------------—

 2016-06-17     /   Enzo Mastinu        / Creation ADS_BP project.

Function Documentation

COMM_IntHandler()

void COMM_IntHandler

(

void

)

UART reception ISR for decoding and executing commands given by external master devices.

Parameters

[in]

none

Returns

none.

DeviceInit()

void DeviceInit

(

void

)

Function in charge of initializing the ALC-D system.

Parameters

[in]

none

Returns

none.

The function initializes the following peripherals and devices:

• System Clock at 80 Mhz
• All needed GPIOs
• LEDs output pins
• Analog pin for battery voltage/temperature reading
• UART for external communication
• SPI for ADS1299
• ADS1299

• TIMERs

  Measured Execution Time @80MHz: 14/07/2016 -> 1.26 s

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main()

int main

(

void

)

Main function.

ISR priorities
 | Timer3IntHandler            -> 000 = 0x00 –> Accessory timer
        | Timer0IntHandler         -> 001 = 0x20 –> Acquisition timer
     | COMM_IntHandler         -> 001 = 0x20 –> UART communication
            | Timer2IntHandler -> 011 = 0x40 –> LED blinking
    <-------------------— higher priority ----------------------—

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Timer0IntHandler()

void Timer0IntHandler

(

void

)

Timer ISR for ADS1299 samples acquisition.

Parameters

[in]

none

Returns

none.

Measured Execution Time @80MHz: 13/07/2016 -> 357 us

Timer2IntHandler()

void Timer2IntHandler

(

void

)

Timer ISR for LED blinking.

Parameters

[in]

none

Returns

none.

In the common setup LEDs are driven in this way:

• LED1 (usually green) blinks at 2 Hz in stand-by, communication and control mode
• LED1 blinks at 10 Hz during EMG or features recording
• LED2 (usually blue):
  • is off when Bluetooth module not found
  • blinks at 2 Hz when the Bluetooth module is present but not connected
  • is on when the Bluetooth module is connected

Timer3IntHandler()

void Timer3IntHandler

(

void

)

Timer ISR for accessory operation.

Parameters

[in]

none

Returns

none.

This has been used for UART and SPI timeout of reading.