main.c File Reference

iSensor-SPI-Buffer main. Contains STM init functions and application cyclic executive. More...

#include "usb.h"
#include "main.h"
#include "reg.h"
#include "imu.h"
#include "usbd_cdc_if.h"
#include "usb_device.h"
#include "sd_card.h"
#include "buffer.h"
#include "user_interrupt.h"
#include "flash.h"
#include "led.h"
#include "watchdog.h"
#include "timer.h"
#include "dio.h"
#include "adc.h"
#include "dfu.h"
#include "user_spi.h"
#include "data_capture.h"
#include "script.h"

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Functions
static void	SystemClock_Config ()
	System Clock Configuration. More...
static void	MX_GPIO_Init ()
	GPIO Initialization Function. More...
static void	DMA_Init ()
	Init all DMA channels in use and configure DMA interrupts. More...
int	main ()
	The application entry point. More...
void	Main_Error_Handler ()
	This function is executed in case of error occurrence. More...

Variables
DMA_HandleTypeDef	g_dma_spi1_rx
DMA_HandleTypeDef	g_dma_spi1_tx
DMA_HandleTypeDef	g_dma_spi2_tx
SPI_HandleTypeDef	g_spi1
SPI_HandleTypeDef	g_spi2
static uint32_t	state

Detailed Description

iSensor-SPI-Buffer main. Contains STM init functions and application cyclic executive.

Copyright (c) Analog Devices Inc, 2020 All Rights Reserved.

Date

3/14/2020

Author

A. Nolan (alex..nosp@m.nola.nosp@m.n@ana.nosp@m.log..nosp@m.com)

Function Documentation

DMA_Init()

static void DMA_Init ( )

static

Init all DMA channels in use and configure DMA interrupts.

Returns

void

Currently use three DMA channels, on DMA peripheral 1: DMA2/3 - IMU SPI port, used for burst reads from IMU DMA5 - User SPI port, Used for buffer burst outputs. Rx not used

All DMA channels are configured to generate interrupts upon the completion of a transfer. The user SPI DMA interrupt is used just to check for any error events which might have occurred during the burst read process.

The IMU DMA interrupts are used to determine when a burst read from the IMU has completed. Both the Tx and Rx channels must be done for a burst read to have completed (Tx should finish last).

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main()

int main

(

)

The application entry point.

Returns

main status code. Should not return.

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Main_Error_Handler()

void Main_Error_Handler

(

)

This function is executed in case of error occurrence.

Returns

void

During init, errors are logged, then init continues. This is done to reduce potential for a fault locking the device in a reset loop.

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MX_GPIO_Init()

static void MX_GPIO_Init ( )

static

GPIO Initialization Function.

Returns

void

TIM3 GPIO Configuration PA4 ---—> TIM3_CH2

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SystemClock_Config()

static void SystemClock_Config ( )

static

System Clock Configuration.

Returns

void

Initializes the CPU, AHB and APB busses clocks

Initializes the CPU, AHB and APB busses clocks

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Variable Documentation

g_dma_spi1_rx

DMA_HandleTypeDef g_dma_spi1_rx

IMU SPI Rx DMA handle. Global scope

g_dma_spi1_tx

DMA_HandleTypeDef g_dma_spi1_tx

IMU SPI Tx DMA handle. Global scope

g_dma_spi2_tx

DMA_HandleTypeDef g_dma_spi2_tx

User SPI Tx DMA handle. Global scope

g_spi1

SPI_HandleTypeDef g_spi1

SPI handle for IMU master port. Global scope

g_spi2

SPI_HandleTypeDef g_spi2

SPI handle for slave port (from master controller). Global scope

state

uint32_t state

static

Track the cyclic executive state