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PSoC 4 MCU

Anonymous
Not applicable

 Currently I am trying to interface PSOC 4 ble with LIS2DH12 accelerometer. This is the first time I am using SPI interfacing.

   

So if you have any sample codes or any application notes would be good.

   

 

   

Thanks.

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1 Solution
ETRO_SSN583
Esteemed Contributor

From Bob in  a prior post on SPI -

   

 

   

    

   

          

   

Reading from an SPI slave takes a little bit of getting used to.

   

 

   

SPI is organized, so that for every bit written to the slave a bit is returned by the slave at the very same time.

    

So the usual procedure to read from a slave is: 

   
        
  • Assert  ss
  •     
  • Write byte(s) to slave to indicate what the slave has to answer (commands).
  •     
  • When done (transmitted), clear the recieve buffer
  •     
  • Write as many dummy bytes to the slave as you want to read.
  •     
  • When done (transmitted), de-assert ss
  •     
  • Now your RX-buffer is filled with the required information which you can read out now.
  •    
   

 Seems to be a bit (or byte) weired, but that's the way SPI works.

   

 

   

Regards, Dana.

View solution in original post

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6 Replies
Bob_Marlowe
Expert II

There are example projects for PSoC4 and SPI. Just use the "Find Example Project" from Creator's start page. From the component's view there is not much difference between a PSoC4 and the BLE-version.

   

 

   

Bob

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ETRO_SSN583
Esteemed Contributor

There are some accelerometer projects over here -

   

 

   

    

   

          

   

PSOC 4 element14.com

                                           
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

S No

Date

Project Title

1

01-May-2013

Simple Blinking LED

2

02-May-2013

CapSense Slider Example

3

03-May-2013

PSoC 4 Pioneer Kit Annotation Library

4

06-May-2013

USB-UART utility

5

07-May-2013

USB-I2C Utility

6

08-May-2013

Danger Shield with Light Sensor Control

7

09-May-2013

Danger Shield with 7-segment display

8

10-May-2013

Danger Shield Buzzer of Doom

9

13-May-2013

Graphics LCD Display

10

14-May-2013

LCD - Rotating Cube Demo

11

15-May-2013

GLCD Paddle Game

12

16-May-2013

Pioneer Board Oscilloscope

13

17-May-2013

CapSense Button & LED Control with Bridge Control Panel

14

20-May-2013

What was the value? - LED Memory Example

15

21-May-2013

CapSense Proximity Detection

16

22-May-2013

Proximity Theremin

17

23-May-2013

2-Channel OScope with GraphicsLCD

18

24-May-2013

'Catch the Shells' Game with ColorLCD Shield

19

28-May-2013

LED Memory! Part Deux. Just Deux it!

20

29-May-2013

Starter Designs

21

30-May-2013

Fractional Frequency Synthesizer

22

31-May-2013

“Kill The Ghost” Game

23

03-Jun-2013

tinyprintf Example

24

04-Jun-2013

XBee Router Loopback Example

25

05-Jun-2013

XBee Direct IO

26

06-Jun-2013

XBee API RxTx Example

27

07-Jun-2013

XBee RGB CapSense Control

28

10-Jun-2013

“WiFi? Why Not!” Arduino WiFi Shield Example

29

11-Jun-2013

Bluetooth Home Automation System

30

12-Jun-2013

Bluetooth with GLCD

31

13-Jun-2013

Ethernet Shield

32

14-Jun-2013

More Relay!

33

17-Jun-2013

Sweet Music Everywhere! MIDI Shield

34

18-Jun-2013

Resistive Touch Example

35

19-Jun-2013

UART, I2C, and SPI Joystick Example

36

20-Jun-2013

What? I can use the PSoC 5LP too?

37

21-Jun-2013

PSoC With Friends! Word Scramble Game

38

24-Jun-2013

Ultrasonic Distance Measurement

39

25-Jun-2013

Two PWMs for the price of one

40

26-Jun-2013

Pioneer PnP Sensors

41

27-Jun-2013

Thermistor Example

42

28-Jun-2013

Hangman Game

43

01-Jul-2013

Rise of the Machines (Rolling Robot)

44

02-Jul-2013

Run Away Run Away! (Proximity Robot)

45

03-Jul-2013

Stepper Motor Example

46

05-Jul-2013

“Paint The Night” Accelerometer Example

47

08-Jul-2013

Obstacle Avoider Robot

48

09-Jul-2013

Walk The Line! Robot Example

49

11-Jul-2013

Android Device Controlled Robot

50

12-Jul-2013

SD Card Example

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

S No

Date

Project Title

51

15-Jul-2013

Music Player

52

16-Jul-2013

Strike A Pose! Digital Camera

53

17-Jul-2013

PSoC Eye

54

18-Jul-2013

Custom Component 4x4 Keypad

55

19-Jul-2013

Parallel to Serial UDB Component

56

22-Jul-2013

Accelerometer Level

57

23-Jul-2013

Digital Audio From A Single Pin

58

24-Jul-2013

An Introduction to Processing

59

25-Jul-2013

But Wait There’s More! Single PWM with 3 Outputs

60

26-Jul-2013

PSoC 4 Mini-Billboard

61

29-Jul-2013

Nokia 5110 LCD Interface

62

30-Jul-2013

Ready…Set…GO! PSoC Stopwatch

63

31-Jul-2013

Some Like it Hot! PSoC Thermostat

64

01-Aug-2013

Workspace Organization using PSoC Theromostat

65

02-Aug-2013

New to PSoC or the Pioneer Kit? START HERE!

66

05-Aug-2013

LED Blinky Revisited

67

06-Aug-2013

PSoC 4 Getting Started Lab 1 (LED Blinky)

68

07-Aug-2013

PSoC 4 Getting Started Lab 2 (PWM LED)

69

08-Aug-2013

PSoC 4 Getting Started Lab 3 (CapSense UART)

70

09-Aug-2013

PSoC 4 Getting Started Lab 4 (ADC)

71

12-Aug-2013

Get Your Motor Runnin’!

72

13-Aug-2013

TFT Touchscreen Shield

73

14-Aug-2013

TFT Touchscreen Tic-Tac-Toe Game

74

15-Aug-2013

PSoC Creator Training 110

75

16-Aug-2013

PSoC Creator Training 111                                          

76

19-Aug-2013

PSoC Creator Training 112

77

20-Aug-2013

PSoC Creator Training 113

78

21-Aug-2013

PSoC Creator Training 210

79

22-Aug-2013

PSoC Creator Training 211

80

23-Aug-2013

PSoC Creator Training 212/213/214

81

26-Aug-2013

NFC/RFID Shield

82

27-Aug-2013

RFID Reader and Writer Project #2

83

28-Aug-2013

Raspberry Pi Integration

84

29-Aug-2013

State Machines in PSoC 4

85

30-Aug-2013

UART Bootloader in PSoC 4

86

03-Sep-2013

GPS Algorithm

87

04-Sep-2013

Gas Sensor Example

88

05-Sep-2013

Simulation of Gas Sensor Example

89

06-Sep-2013

GPS Example

90

09-Sep-2013

Comparator Example

91

10-Sep-2013

Infrared Remote Control

92

11-Sep-2013

Serial Communications Examples

93

12-Sep-2013

4 Channel Multiplexed Comparator

94

13-Sep-2013

Opamp Dynamic Gain

95

16-Sep-2013

Hibernate and Stop Power Modes

96

17-Sep-2013

P4 Light Sensor Project Design

97

18-Sep-2013

Rice Cooker

98

19-Sep-2013

Thermal Printer

99

20-Sep-2013

I2C Pass Though 'Smart Wire'

100

23-Sep-2013

PSoC 4 Time Square Billboard

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rola_264706
Honored Contributor II

The Psoc 4 m kit has a program to read this kind of data.check this  http://www.cypress.com/?docID=53577 look at section 4.7 for information about its accelerometer.  The program also sends the data to Micrium μC/Probe .
 

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Anonymous
Not applicable

 An accelerometer sample project can be obtained from: http://www.cypress.com/?rID=111982

   

This uses Analog accelerometer. SPI interface should be simple. You can refer the Creator example projects to understand SPI interfaces. 

0 Likes
ETRO_SSN583
Esteemed Contributor

From Bob in  a prior post on SPI -

   

 

   

    

   

          

   

Reading from an SPI slave takes a little bit of getting used to.

   

 

   

SPI is organized, so that for every bit written to the slave a bit is returned by the slave at the very same time.

    

So the usual procedure to read from a slave is: 

   
        
  • Assert  ss
  •     
  • Write byte(s) to slave to indicate what the slave has to answer (commands).
  •     
  • When done (transmitted), clear the recieve buffer
  •     
  • Write as many dummy bytes to the slave as you want to read.
  •     
  • When done (transmitted), de-assert ss
  •     
  • Now your RX-buffer is filled with the required information which you can read out now.
  •    
   

 Seems to be a bit (or byte) weired, but that's the way SPI works.

   

 

   

Regards, Dana.

View solution in original post

0 Likes
Anonymous
Not applicable

Finally I am able to interface both accelerometer and flash over the SPI bus.

   

 Thank you very much guys for your help.

0 Likes