Forum - Recent Threads

Baremetal Code needed for KL25Z UART

mcuism — Fri, 12 Jul 2019 19:44:56 GMT

Hello,

I started practising my ARM programming with KL25Z FRDM board by NXP Semiconductors. I would like to know how we must access the UART lines for sending the data using "Only BareMetal Coding and not with any other softwares like Kinetis etc.," please help me out. Thanks in advance.

Bricked FRDM-K82F

cybermah — Thu, 20 Apr 2017 01:24:45 GMT

Hi,

I have a FRDM-K82FFRDM-K82F board that I bricked by plugging it in my windows 10 laptop before knowing about the bootloader bug with windows 10 I would like to get the board working again and I was wondering if anyone has information on how to reload the OpenSDA bootloader I have seen post somewhere for a different board where they used another board to reload it I do have a second K82F board but I'm not sure how to use it to load a bootloader on the bricked one I was also thinking about buying a programmer from ebay that I think would do the same job ULINK2 USB JTAG Emulator support MDK4.54 ARM7 Cortex Keil Debug Adapter AK, but I would have to make a cable to convert it from a 20 pin 2.54mm pitch to a 10 pin 1.27mm pitch. Has anyone used this type of programmer? And would it work to load the bootloader?

Thanks

Dana.

NXP FRDM-HB2001-EVM, MC33HB2001 Configure to Half Bridge Mode

hweiko — Thu, 13 Apr 2017 01:37:56 GMT

Hi all,

Does anyone here have any experience in using the FRDM-HB2001-EVM evaluation board with Freedom Board FRDM-KL25ZFRDM-KL25Z or the MC33HB2001 chip from NXP

It is an SPI programmable brushed DC motor driver which can work in 2 modes, H bridge and Half Bridge modes. This changing of mode can be done through the use of NXP's SPIGen software to program the FRDM-HB2001-EVM connected with FRSM-KL25Z. However, it seems that by using the software, the switching of modes is only temporary for as long as the SPIGen software runs.

Is there any way to make the MC33HB2001 chip permanently a Half-Bridge Driver on its own so that it does not have to be connected to the FRDM-KL25ZFRDM-KL25Z and the SPIGen software

Thanks a lot!

NOR , NAND Flash tests at u-boot level

sathi — Sat, 24 Sep 2016 12:35:40 GMT

I need to verify all the memories(NOR,NAND,SPI Flash) on my board( P2020 )using a 'C' program.

1) Please share any sample program or any reference manual to access memories using a C program.

2) Also please share the required header files needed to include in C file.

Regards

Naresh

I cannot access FRDM - KL25Z via PUTTY (or similar Terminal)

nablasound — Wed, 26 Aug 2015 11:21:23 GMT

Hello everybody,

I purchased a FRDM - KL25Z board with an Intrinsc sensor board and set it up like the Start Up Guide suggested. Additionally I updated the MSD and the bootloader version to the newest version.

Because we want to use the device only to record the sourunding magnetic fileds I tried to access the board via putty (and also Tera Term) to directly read its data via the serial Port.

Therefore the manual suggested to run the serial_test file which comes with the precompiled files, which perfectly worked. When trying to acces the board directly it just gave back a string of signs that made no sense and trying out different translations didnt change anything.

I made sure to use the same baud rate, parity, bit, etc configuration the manual suggests and as stated before tried different terminals to access the board.

After unplugging and restarting my computer (OS = Windows 7 btw) and plugging the board back in, the board does not send anything to the terminal (not even some bullshitt like before)

Has anybody encountered a similar problem and knows a way out.

Thank you very much in advance

Martin

FRDM-K64F + KSDK SOFTWARE：How to light up a LCD screen display Chinese characters

Former Member — Mon, 18 May 2015 09:53:03 GMT

The LCD panel model:LM6060CBY

I want to use the gpio port initialization LCD pin，but i don't know why is the LCD screen is couldn't show Chinese characters, don't know whether I drive call errors, hope everybody to help me look at it.

Below is the LCD initialization code：

void initLCDM(void)

{

uint8_t ContrastLevel=0x2c; // default Contrast Level

GPIO_DRV_Init(NULL,lcdpins);//gpio initialization ：GPIO_DRV_Init(const gpio_input_pin_user_config_t * inputPins,const gpio_output_pin_user_config_t * outputPins)

configure_lcd_pins(0);//gpio Pin reuse

GPIO_DRV_WritePinOutput(kLCDCS, 1);

GPIO_DRV_WritePinOutput(kLCDRST,1);

GPIO_DRV_WritePinOutput(kLCDA0, 1);

GPIO_DRV_WritePinOutput(kLCDWR, 1);

GPIO_DRV_WritePinOutput(kLCDRD, 1);

GPIO_DRV_WritePinOutput(kLCDD0, 1);

GPIO_DRV_WritePinOutput(kLCDD1, 1);

GPIO_DRV_WritePinOutput(kLCDD2, 1);

GPIO_DRV_WritePinOutput(kLCDD3, 1);

GPIO_DRV_WritePinOutput(kLCDD4, 1);

GPIO_DRV_WritePinOutput(kLCDD5, 1);

GPIO_DRV_WritePinOutput(kLCDD6, 1);

GPIO_DRV_WritePinOutput(kLCDD7, 1);

GPIO_DRV_WritePinOutput(kLCDVC, 1);

GPIO_DRV_WritePinOutput(kLCDVD, 1);

GPIO_DRV_WritePinOutput(kLCDRST, 1);

GPIO_DRV_WritePinOutput(kLCDRST, 0);

GPIO_DRV_WritePinOutput(kLCDRST, 1);

SdCmd(0xaf); // display on

SdCmd(0x40); // display start line=0

SdCmd(0xa0); // ADC=0

SdCmd(0xa6); // normal display

SdCmd(0xa4); // Duisplay all point = off

SdCmd(0xa2); // LCD bias = 1/9

SdCmd(0xc8); // Common output mode select= reverse

SdCmd(0x2f); // Power control = all on

SdCmd(0x25); // LCD(G-mode) use internal Rb/Ra;

/********************Modify booster multiple f801(5x)->f800***********/

SdCmd(0xf8); // Booster Ratio = 4x

SdCmd(0x00); // (two byte command)

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

SdCmd(0x81); // E-Vol setting

SdCmd(ContrastLevel); // (2byte command)

Display_Clear();

}

const gpio_output_pin_user_config_t lcdpins[] = {

{

.pinName = kLCDCS,

.config.outputLogic = 0,