ESP32 Forum

Posted: **Mon Nov 28, 2022 12:24 am**

Hello All ;

I'm working simple GPIO capture project. it should work fastest as much as possible. So decided to use High Level Interrupt.

I guess , i couldn't compile it in correct way, when the interrupt occurs, its directly jump to default routines ( "xtensa_vector_default.S")

My code is below. Could you please help me how to link my asm file in correct-way ?

C Code: define the gpio and interrupt

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     REG_SET_BIT(DPORT_CPU_PERI_CLK_EN_REG, DPORT_CLK_EN_DEDICATED_GPIO);
    REG_CLR_BIT(DPORT_CPU_PERI_RST_EN_REG, DPORT_RST_EN_DEDICATED_GPIO);
    /* get the values of dedicated GPIO from the CPU, not peripheral registers */
    REG_WRITE(DEDICATED_GPIO_OUT_CPU_EN_REG, 0xff);

    PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[config->pin_xclk], PIN_FUNC_GPIO);
    gpio_set_direction(config->pin_xclk, GPIO_MODE_OUTPUT);
    gpio_set_pull_mode(config->pin_xclk, GPIO_FLOATING);
    gpio_matrix_out(config->pin_xclk, PRO_ALONEGPIO_OUT0_IDX , false, false);
    
    gpio_config_t io_conf = {0};
    io_conf.intr_type =  GPIO_PIN_INTR_NEGEDGE;
    io_conf.pin_bit_mask = 1ULL << config->pin_href;
    io_conf.mode = GPIO_MODE_INPUT;
    io_conf.pull_up_en = 1;
    io_conf.pull_down_en = 0;
    gpio_config(&io_conf);

	//ESP_INTR_DISABLE(31);
	//intr_matrix_set(1, ETS_GPIO_INTR_SOURCE, 31);
	//ESP_INTR_ENABLE(31);

    esp_intr_alloc(ETS_GPIO_INTR_SOURCE, ESP_INTR_FLAG_LEVEL5|ESP_INTR_FLAG_IRAM, NULL, NULL, NULL);

Asm Code:

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#include <xtensa/coreasm.h>
#include <xtensa/corebits.h>
#include <xtensa/config/system.h>
#include "soc/gpio_reg.h"


#define DRDY_INT_PIN_BITMASK    (1<<14)  // GPIO14 as interrupt pin

.data
_l5_intr_stack:
.space      8

    .section .iram1,"ax"
    .global     xt_highint5
    .type       xt_highint5,@function
    .align      4
xt_highint5:
    //save register values
    movi    a0, _l5_intr_stack
    s32i    a13,    a0,     0
    s32i    a15,    a0,     4

    // cleare the interrupt status of GPIO14(used interrupt pint!)
    movi a13, GPIO_STATUS_W1TC_REG
    movi a15,  DRDY_INT_PIN_BITMASK
    s32i a15, a13, 0

//Add Couple of ns to Wait
nop
nop
nop
nop
nop

//Clear the corespanding Dedicated GPIO output
clr_bit_gpio_out 0x1

    //restore register values
    movi    a0, _l5_intr_stack
    l32i    a13,    a0,     0
    l32i    a15,    a0,     4

    rsr     a0,     EXCSAVE_5
    rfi     5

    .global ld_include_highint_hdl
ld_include_highint_hdl:

Cmake :

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set(COMPONENT_ADD_INCLUDEDIRS "include" ".")
#set(COMPONENT_PRIV_INCLUDEDIRS "include .")

SET(ASM_OPTIONS "-x assembler-with-cpp")
SET(CMAKE_ASM_FLAGS "${CFLAGS} ${ASM_OPTIONS}" )


set(COMPONENT_SRCS "int_GPIO14.s")


#set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u ld_include_highint_hdl")


register_component()

 target_link_libraries(${COMPONENT_LIB}  "-u ld_include_highint_hdl")

Thanks.

Posted: **Tue Dec 20, 2022 7:18 am**

Any one can help on this .

Thank You

ESP32 Forum

High Level Interrupt linking issue;

High Level Interrupt linking issue;

Re: High Level Interrupt linking issue;