Hi I am Renjith. I am very new to keil IDE and also STM32f4 Discovery. While doing a GPIO project, i have got output through register configuration. The same project was done using stm32 standard gpio library, its showing linking error, I have tried my level best but could not rectify, so kindly please help....
#include "stm32f4xx.h" #include "stm32f4xx_rcc.h" #include "stm32f4xx_gpio.h" GPIO_InitTypeDef GPIO_InitDef; int main(void) { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE); GPIO_InitDef.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14; GPIO_InitDef.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitDef.GPIO_OType = GPIO_OType_PP; GPIO_InitDef.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitDef.GPIO_Speed = GPIO_Speed_100MHz; //Initialize pins GPIO_Init(GPIOD, &GPIO_InitDef); //volatile int i; while (1) { GPIO_SetBits(GPIOD, GPIO_Pin_13 | GPIO_Pin_14); } }
And i got this error Rebuild target 'main' compiling Main.c... assembling startup_stm32f407xx.s... compiling system_stm32f4xx.c... linking... .\Objects\main.axf: Error: L6218E: Undefined symbol GPIO_Init (referred from main.o). .\Objects\main.axf: Error: L6218E: Undefined symbol GPIO_SetBits (referred from main.o). .\Objects\main.axf: Error: L6218E: Undefined symbol RCC_AHB1PeriphClockCmd (referred from main.o). Not enough information to list image symbols. Finished: 1 information, 0 warning and 3 error messages. ".\Objects\main.axf" - 3 Error(s), 0 Warning(s). Target not created. Build Time Elapsed: 00:00:04
Please help me to find a solution.