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MotooTanaka
Level 9
Level 9
Distributor - Marubun (Japan)
First comment on blog Beta tester First comment on KBA

Hi,

こんばんは、

I'm going to teach a 10 days FPGA design course starting from next Monday.

And during the course I'm also planning to teach the basic hands on of PSoC 4 (CY8CKIT-044).

So I was browsing sample projects and I found that "CY8CKIT-044 Sensor Hub" is very nice.

But it requires Micrium uC-Probe to show its best.

Although uC-Probe is free download, after 45 days it may require additional cost.

So I decide to hack-up a more affordable sample for students.

来週から10日間の FPGA 実習講座を教えるのですが、その中で PSoC 4 (CY8CKIT-044) を使用したハンズオンも企んでいます。

何か良さそうなサンプルないかなとみていたら、キットについてくるサンプルの "CY8CKIT-044 Sensor Hub" がとても良さそうなのですが、

Micrium uC-Probe 経由でないと一番格好の良いところは見せられそうもありません。

uC-Probe って、ダウンロード時は無償なのですが、45日経つと無償期間が終わってしまうようなので、

学生さん向けに、もう少しお財布にやさしいデモにでっち上げてみました。

Although the original example project was using WDT I chose SysTick.

So that it will be easier to change the interval(s) of each sensors.

I cheated by using my previous samples

元サンプルは WDT を使用してタイミングをとっていましたが、各センサーのインターバルを

変更しやすいように SysTick を使用しました。

また、先に投稿してあった下記のサンプルを使用して、少し楽をさせてもらいました。

tty_utils a utility sample for CLI type program

https://community.cypress.com/message/200391#200391

A simple VT100 Escape Sequence Emulator

https://community.cypress.com/message/188161#188161

RTC with 32kHz Crystal Sample

https://community.cypress.com/thread/54092

schematic / 回路図

001-schematic-1.JPG

002-schematic-2.JPG

003-schematic-3.JPG

004-schematic-4.JPG

pins / ピンアサイン

005-pins.JPG

main.c

========================

#include "project.h"

#include "stdio.h"

#include "tty_utils.h"

#include "vt100.h"

#include "rtc_utils.h"

#include "main.h"

#include "accelerometer.h"

/*****************************************************************************

* Local Function Prototypes

*****************************************************************************/

CY_ISR_PROTO(Accelerometer_Interrupt);

CY_ISR_PROTO(SW2_Pressed) ;

CY_ISR_PROTO(SysTick_ISR) ;

#define LOC_DATE_X 20

#define LOC_DATE_Y 4

#define LOC_TEMP_X 10

#define LOC_TEMP_Y 8

#define LOC_AMB_X  40

#define LOC_AMB_Y  8

#define LOC_ACC_X  10

#define LOC_ACC_Y  12

#define LOC_ACCX_X 16

#define LOC_ACCY_X 28

#define LOC_ACCZ_X 40

/*****************************************************************************

* Global Variable Declarations

*****************************************************************************/

int16 ambientLight             = ZERO;

int8  temperatureInteger       = ZERO;

int16 x_dirMovement            = ACC_NO_MOVEMENT;

int16 y_dirMovement            = ACC_NO_MOVEMENT;

int16 z_dirMovement            = ACC_NO_MOVEMENT;

uint8 temperatureFractional    = ZERO;

uint8 acclerometer_configured  = FALSE;

uint8 accRequest               = FALSE;

uint8 oneSecondTrigger         = FALSE;

uint8 displayErrorOnce         = FALSE;

int   rtc_configured           = FALSE ;

volatile int      g_redraw     = TRUE ;

volatile uint32_t g_tick_count = ZERO ;

volatile int      sec_flag     = FALSE;

volatile int      acc_flag     = FALSE ;

volatile int      temp_flag    = FALSE ;

volatile int      light_flag   = FALSE ;

char *temp_title    = "Temperature: " ;

char *amb_title     = "Ambient Light: " ;

char *acc_title     = "Acc:" ;

char *accx_title    = "X: " ;

char *accy_title    = "Y: " ;

char *accz_title    = "Z: " ;

int  temp_title_len = ZERO ;

int  amb_title_len  = ZERO ;

int  acc_title_len  = ZERO ;

int  accx_title_len = ZERO ;

int  accy_title_len = ZERO ;

int  accz_title_len = ZERO ;

void draw_frame(void)

{

    splash("CY8CKIT-044 Sensor Test") ;

    locate(LOC_TEMP_X, LOC_TEMP_Y) ;

    print(temp_title) ;

    temp_title_len = strlen(temp_title) ;

    locate(LOC_AMB_X, LOC_AMB_Y) ;

    print(amb_title) ;

    amb_title_len = strlen(amb_title) ;

    locate(LOC_ACC_X, LOC_ACC_Y) ;

    print(acc_title) ;

    acc_title_len = strlen(acc_title) ;

    locate(LOC_ACCX_X, LOC_ACC_Y) ;

    print(accx_title) ;

    accx_title_len = strlen(accx_title) ;

    locate(LOC_ACCY_X, LOC_ACC_Y) ;

    print(accy_title) ;

    accy_title_len = strlen(accy_title) ;

    locate(LOC_ACCZ_X, LOC_ACC_Y) ;

    print(accz_title) ;

    accz_title_len = strlen(accz_title) ;

}

int find_empty_slot(void)

{

    int result = -1 ;

    uint32_t i ;

    for (i = 0 ; i < CY_SYS_SYST_NUM_OF_CALLBACKS ; i++ ) {

        if (CySysTickGetCallback(i) == NULL) {

            result = i ;

            break ;

        }

    }

    return(result) ;

}

void do_acc(void)

{

/* Dummy variable to read the interrupt release register of accelerometer. */

uint8 dummy = ZERO;

  

    if (accRequest == TRUE && acclerometer_configured == TRUE) {

accRequest = FALSE;

/* Read the accelerometer data and update the global variables. */

ReadAccelerometer(&x_dirMovement, &y_dirMovement, &z_dirMovement);

/* Read interrupt release register to clear the latched interrupt. */

Accelerometer_RegRead(ACC_INT_REL, &dummy);

    }

    locate(LOC_ACCX_X + accx_title_len, LOC_ACC_Y) ;

    snprintf(str, STR_BUF_LEN, "%5d", x_dirMovement) ;

    print(str) ;

    locate(LOC_ACCY_X + accy_title_len, LOC_ACC_Y) ;  

    snprintf(str, STR_BUF_LEN, "%5d", y_dirMovement) ;

    print(str) ;  

    locate(LOC_ACCZ_X + accz_title_len,LOC_ACC_Y) ;  

    snprintf(str, STR_BUF_LEN, "%5d ", z_dirMovement) ;

    print(str) ;

}

void do_temp(void)

{

    /* Local Variables */

uint8 tempError = FALSE;

int16 temperatureReturnVal = ZERO;

  

/* Check if temperature measurement is complete. */

tempError = Temperature_Sense_ConversionStatus();

/* If conversion is complete, update the temperature variable. */

if((tempError & Temperature_Sense_STATUS_COMPLETE) == Temperature_Sense_STATUS_COMPLETE) {

/* Read the temperature value. */

temperatureReturnVal = Temperature_Sense_GetTemperature(DEFAULT_SENSOR);

/* Temperature measured is in 1/100th of a degree Celsius.

* Scale the value for comfortable viewing on UART. */

temperatureInteger = temperatureReturnVal/DIVISOR_HUNDRED;

/* Find the fractional part of temperature data for logging in the F-RAM. */

if(temperatureReturnVal < ZERO) {

temperatureFractional = DIVISOR_HUNDRED - temperatureReturnVal%DIVISOR_HUNDRED;

} else {

temperatureFractional = temperatureReturnVal%DIVISOR_HUNDRED;

}

/* Trigger next conversion when the current conversion is complete. */

Temperature_Sense_Trigger();

}

  

    locate(LOC_TEMP_X + temp_title_len, LOC_TEMP_Y) ;

    snprintf(str, STR_BUF_LEN, "%d.%d ", temperatureInteger, temperatureFractional) ;

    print(str) ;

}

void do_light(void)

{

    locate(LOC_AMB_X + amb_title_len, LOC_AMB_Y) ;

    snprintf(str, STR_BUF_LEN, "%hd ", ambientLight) ;

    print(str) ;

}

void update_time(void)

{

    locate(LOC_DATE_X, LOC_DATE_Y) ;

    print_date() ;

    print(" ") ;

    print_time() ;

    print(" ") ;

}

int main(void)

{

    Initialize_Project() ;

         

    for(;;) {

        if (g_redraw) {

            draw_frame() ;

            g_redraw = FALSE ;

        }

        if (acc_flag) {

            do_acc() ;

            acc_flag = FALSE ;

        }

        if (temp_flag) {

            do_temp() ;

            temp_flag = FALSE ;

        }

        if (light_flag) {

            do_light() ;

            light_flag = FALSE ;

        }

        if (sec_flag) {

            update_time() ;

            sec_flag = 0 ;

        } 

    }

}

/*******************************************************************************

* Function Name: Initialize_Project

********************************************************************************

* Summary:

*  Starts and initializes all the Components in the project. Enables

   global interrupt.

*

* Parameters:

*  void

*

* Return:

*  void

*

*******************************************************************************/

void Initialize_Project(void)

{

    int sys_tick_slot = 0 ;

  

/* Enable global interrupt. */

CyGlobalIntEnable;

/* Start the Opamp hardware. */

Opamp_Start();

/* Enable and start ADC block. */

ADC_Start();

/* Enable the DMA Component. This API also sets the

* source and destination addresses. */

DMA_Start((void *)ADC_SAR_CHAN0_RESULT_PTR, (void *)&ambientLight);

/* Start ADC conversions. */

ADC_StartConvert();

/* Enable and start accelerometer I2C block. */

I2C_Start();

/* Enable the interrupt from accelerometer. */

isr_Accelerometer_Interrupt_StartEx(Accelerometer_Interrupt);

/* Start the TMP05 temperature sensor Component. */

Temperature_Sense_Start();

/* Trigger the temperature sensor Component to start measurement. */

Temperature_Sense_Trigger();

/* Enable and start UART communication block. */

    tty_init() ;

/* Wait for 50ms for the accelerometer to start up. */

CyDelay(ACC_STARTUP_TIME);

  

    sys_tick_slot = find_empty_slot() ;

    if (sys_tick_slot < 0) {

        print("Sorry No empty SysTick Slot available\n\r") ;

        while(1) { } /* halting here */

    } else {

        CySysTickStart() ;

        CySysTickSetCallback(sys_tick_slot, SysTick_ISR) ;

    }

  

    /* Initialize the accelerometer after a self-test. */

InitializeAccelerometer();

  

    sw2_int_ClearPending() ;

    sw2_int_StartEx(SW2_Pressed) ;

  

    cls() ;

    setup_time() ;

}

CY_ISR(Accelerometer_Interrupt)

{

    accRequest = TRUE;

Pin_Accelerometer_Interrupt_ClearInterrupt();

}

CY_ISR_PROTO(SW2_Pressed)

{

    g_redraw = TRUE ;

  

    SW2_ClearInterrupt() ;

}

CY_ISR(SysTick_ISR)

{

    g_tick_count++ ;

    if ((g_tick_count % 100) == 0) { /* 0.1 sec */

        acc_flag = TRUE ;

        if ((g_tick_count % 1000) == 0) { /* 1 sec */

            sec_flag   = TRUE ;

            light_flag = TRUE ;

            temp_flag  = TRUE ;

            g_tick_count = 0 ;

        }

    }

}

========================

Tera Term output / Tera Term 出力

When the program starts, it asks for date and time.

起動すると、日付と時間の入力が要求されます。

006-startup.JPG

When date and time were given, program starts polling the sensor(s)

日時の設定が終わるとプログラムは各センサの値を表示します。

007-running.JPG

But as the program only rewrites the value, if you scroll or resize the window, titles will be lost.

プログラムは値のみアップデートしていますので、ターミナルをスクロールしたり

リサイズしたりすると値のタイトルが消えてしまいます。

008-screen-broken.JPG

Push SW2 to redraw the titles.

その場合には、SW2 を押すとタイトルが再表示されます。

009-frame-drew.JPG

moto

19-Aug-2020 Edited to correct some English.

0 Likes
1 Reply
Ekta
Moderator
Moderator
Moderator
750 replies posted First like given 250 solutions authored

Hello Moto

Thank you for providing the example project.

Best Regards

Ekta