开始准备将已有项目porting到esp32，采用v4.0 的esp-idf。 但是在编译的时候遇到以下问题 build/esp32/libesp32.a(cpu_start.o): in function `main_task': /home/fhe/esp/esp-idf/components/esp32/cpu_start.c:556: undefined reference to `app_main' 程序结构如下 esp_idf （文件夹 esp32 sdk） main.c Makefile 在console下直接运行make出现上述错误 Makefile内容如下 PROJECT_N...

HI, I tried to set spi clk configuration by writing the SPI_CLOCK_REG. and then i tried to read it out. and i found it's still a default value of reset. The code is like bellow. Does i missed somewhere before access spi registers? WRITE_PERI_REG(SPI_CLOCK_REG(SPI_NUM_HSPI), ((0x7 & SPI_CLKDIV_PRE) <...

Hi, i'm trying to use the HSPI to communication with my slave spi device, GPIO12~15 is used for the HSPI interafce. But i can't capture any clk output with logic analyzer. Can anybody have a look at this. lgw_spi_open() // this is for HSPI init { gpio_pad_select_gpio(CS_PIN); gpio_set_direction(CS_P...

Hi, i'm triying to use to enable the spi master function on esp32. with Pins (GPIO12~15 and a reset pin of GPIO4). this is the spi init fucntion, nt lgw_spi_open (void** spi_target_ptr) { gpio_set_direction(CS_PIN, GPIO_MODE_OUTPUT); PIN_FUNC_SELECT(IO_MUX_GPIO12_REG, FUNC_MTDI_HSPIQ); // Pin MTDI -...

Hi, I'm try to integrate the esp-idf to our makefile based project, and i need to use the spi driver for spi master. so I tried to define my include path in the makefile to include path for driver/spi_master.h. but then i tried to build and many errors occured, like: components/soc/src/esp32/include...

ESP_igrr wrote: ↑

Wed Apr 08, 2020 7:30 am

You should be able to use regular 'ar' tool (this tool is not architecture specific), but you do need to use "xtensa-esp32-elf-gcc -mlongcalls" to build the object files which go into the static library.

Hi, Thanks you. Yes, indeed i need to rebuild the liabrary with the correct toolchain

hi, i'm trying to call the function which is implemented in a static library(.a file) in app_main(). I already defined to linke this library in the component.mk of the main.c. the libray is prebuilt with GNC toolcahin (gcc),. the console promote "libmylib.a: error adding symbols: file format not rec...