{"id":123,"date":"2014-02-04T17:39:32","date_gmt":"2014-02-05T01:39:32","guid":{"rendered":"http:\/\/visualgdb.com\/w\/?p=123"},"modified":"2021-03-09T12:02:25","modified_gmt":"2021-03-09T20:02:25","slug":"arm-kinetis-frdm-kl25z","status":"publish","type":"post","link":"https:\/\/visualgdb.com\/tutorials\/arm\/kinetis\/frdm-kl25z\/","title":{"rendered":"Developing FRDM-KL25Z firmware with Visual Studio"},"content":{"rendered":"

This tutorial shows how to make a basic ‘Blinking LED’ project for the FRDM-KL25Z development platform with Visual Studio using the VisualGDB add-in.<\/p>\n

Before you begin ensure that you have VisualGDB 4.1<\/a> or later installed.<\/p>\n

    \n
  1. Launch Visual Studio. Start creating a new project with VisualGDB Embedded Project Wizard:\"01-newprj\"<\/a><\/li>\n
  2. Proceed with the default settings (Embedded binary) on the first page:\"02-embeddedbin\"<\/a><\/li>\n
  3. On the second page select the arm-eabi toolchain. If it is not installed, VisualGDB will automatically download and install it for you:\"arminstall\"<\/a><\/li>\n
  4. If you have not created Kinetis projects before, click “Download support for more devices” and select “Freescale Kinetis”. Once the Kinetis files are available, select the MK25Z128xxx4<\/strong> device from the list:\"03-kl25zdev\"<\/a><\/li>\n
  5. Once you press “Next”, VisualGDB will test the toolchain and ensure that it can create projects with the selected settings:\"04-test\"<\/a><\/li>\n
  6. VisualGDB will generate a basic “Blinking LED” project for you after you specify the LED port on the next page of the wizard. According to FRDM-KL25Z schematics, the red LED is connected to PTB18<\/strong>: \"led-schematics\"<\/a>To make the example blink the red LED select PTB as the port group and 18 as the port number:\"05-ledport\"<\/a><\/li>\n
  7. The last page allows configuring debug settings. The FRDM-KL25Z board is equipped with the OpenSDA circuit that can itself be programmed to emulate various hardware debuggers. In this tutorial we will use the Segger J-Link firmware and show how to use the Segger tools. Hold the reset button on the board and plug it into the USB port while holding the button <\/strong>(use the lower connector labeled as SDA). A new drive called ‘BOOTLOADER’ will appear in Explorer.<\/li>\n
  8. Download the Segger firmware from this page<\/a>, unpack the archive and drag-n-drop it to the ‘BOOTLOADER’ drive:\"07-bootloader\"<\/a>Warning: if the drive label is not ‘BOOTLOADER’, you were not holding the ‘Reset’ button while plugging in the device. Do not copy the OpenSDA file in non-bootloader mode as it will be programmed into your KL25 microcontroller instead.<\/span><\/li>\n
  9. Download and install the Segger J-Link software package<\/a>. Reconnect your board and ensure that it is detected as “Segger J-Link” and that the Segger drivers are installed for it (the drivers will be available in the Segger directory in Program Files):\"08-jlink\"<\/a><\/li>\n
  10. Go to the Debug Method page in the wizard, specify the location of the J-Link software and select SWD as the target interface:\"09-seggercfg\"<\/a><\/li>\n
  11. Press the “Finish” button. VisualGDB will generate a Visual Studio project for the FRDM-KL25Z board. Build it by pressing Ctrl-Shift-B:\"10-build\"<\/a><\/li>\n
  12. Press F5 to start debugging. The red part of the RGB LED will start blinking. Put a breakpoint at the line setting the PTB_BASE_PTR->PCOR<\/strong> register and wait until the breakpoint is hit:\"11-breakpoint\"<\/a><\/li>\n
  13. Look at the board. The RGB LED will be inactive:\"led_off\"<\/a><\/li>\n
  14. Press F10 to step over the current line. This will write the value of 1 into the 18th<\/sup> bit of the PTB_PCOR register, switching it to outputting 0 and lighting up the red part of the LED (as the other side of it is connected to +3.3V):\"led_red\"<\/a><\/li>\n
  15. Press Shift-F5 to stop debugging.<\/li>\n<\/ol>\n

     <\/p>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    This tutorial shows how to make a basic ‘Blinking LED’ project for the FRDM-KL25Z development platform with Visual Studio using<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89],"tags":[53,207,59],"_links":{"self":[{"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/posts\/123"}],"collection":[{"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/comments?post=123"}],"version-history":[{"count":1,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/posts\/123\/revisions"}],"predecessor-version":[{"id":195,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/posts\/123\/revisions\/195"}],"wp:attachment":[{"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/media?parent=123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/categories?post=123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/visualgdb.com\/w\/wp-json\/wp\/v2\/tags?post=123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}