Infineon MCU - PSoC6 - Lesson0

This is a Lesson-0 for developing on Infineon microcontrollers.In this prelude, I do a simple "Embedded Hello World" application from scratch.

All I know about Infineon MCUs, you could learn from below links:

https://github.com/Infineon/Code-Examples-for-ModusToolbox-Software

https://github.com/Infineon/modustoolbox-software

https://github.com/Infineon/training-modustoolbox

https://github.com/Infineon/AURIX_code_examples

In Lesson-0, I will do the following:

• (A) Creating a new ModusToolboxapplication
• (B) Add Library
• (C) Sending "Hello Embedded World" to PC via UART

(A1) Start Eclipse IDE for ModusToolbox

(A2) Create...\InfineonMCU\lsnPSoC6 somewhere on your computer as Workspace

(A3) Quick Panel -> Start -> New Application

(A4) Kit Name -> PSoC6 BSPs -> CY8CKIT-062S2-43012

(A5) Template Application -> Getting Started -> Empty App

(A6) New Application Name: helloEmbeddedWorld

(A7) Project Explorer -> helloEmbeddedWorld -> main.c : open the main.c and clear file and wire the following

int cnt;
int main() 
{
    for(;;)
    {
        cnt++;
    }
}

(A8) Press (Ctrl + B) to build the project. You have to ecevie a message akin to: 22:07:12 Build Finished. 0 errors, 0 warnings. (took 84ms)

(A9) Quick Panel -> Launches -> helloEmbeddedWorld Debug (KitProg3_MiniPorg4)Add cnt as Expression in "Expressions" tap right to Quick PanelPress F6 to see the int value will be incremented.

(B1) Quick Panel -> Library Manger -> Add Library -> Peripheral -> retarget-io Click OK and then Click Update

(B2) Include the retarget-io library in the main.c

#include "cy_regarget_io.h"

(C1) Change main.c to the following:

#include "cyhal.h"
#include "cybsp.h"
#include "cy_retarget_io.h"

int main()
{
    cy_rslt_t result;
    result = cybsp_init();
    if (result != CY_RSLT_SUCCESS) CY_ASSERT(0);
    result = cy_retarget_io_init(P5_1, P5_0, 9600);
    if (result != CY_RSLT_SUCCESS) CY_ASSERT(0);

    printf("***********************************************************\r\n");
    printf("Hello Embedded World \r\n");
    printf("***********************************************************\r\n");

	for(;;) {}
}

(C2) Install and open RealTerm application or your favorite terminal emulator program such as Tera Term or Termite or PuTTY and so on.

(C3) run the application by:Quick Panel -> Launches -> helloEmbeddedWorld Program (KitProg3_MiniProg4)and you will see that "Hello Embedded World" show at RealTerm screen:

Some explanation:

• To see int variable cnt in Live Expressions, you have to declare it as global variable. If you declare it inside the main() function, it won't work.
• typedef uint32_t cy_rslt_t;
• cy_retartet_io_init(cyhal_gpio_t tx, cyhal_gpio_t rx, uint32_t buadrate) result = cy_retarget_io_init(P5_1, P5_0, 9600);
• In cycfg_pins.h, we can find which pins are used as uart or gpio or i2c and...Project Explorer -> helloEmbeddedWorld -> bsps -> TARGET_APP_CY8CKIT-062S2-43012 -> config -> cycfg_pins.h

#define CYBSP_DEBUG_UART_RX (P5_0)
#define CYBSP_DEBUG_UART_TX (P5_1)

So alternatively, we can write:

result = cy_retarget_io_init(CYBSP_DEBUG_UART_TX , CYBSP_DEBUG_UART_RX , 9600);

• It would be useful to see cy_retarget_io.h

#define CY_RETARGET_IO_BAUDRATE             (115200)

• In UAR Lesson, we will use functions defined in cyhal_uart.h

cy_rslt_t cyhal_uart_putc(cyhal_uart_t *obj, uint32_t value);

cy_rslt_t cyhal_uart_getc(cyhal_uart_t *obj, uint8_t *value, uint32_t timeout);