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
pins / ピンアサイン
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。
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。
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。
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。
moto
基
19-Aug-2020 Edited to correct some English.
