actualizacion

PICO/I2C_SCANER/.gitignore

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+build/

PICO/I2C_SCANER/CMakeLists.txt

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+# Generated Cmake Pico project file
+
+cmake_minimum_required(VERSION 3.13)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+# initalize pico_sdk from installed location
+# (note this can come from environment, CMake cache etc)
+set(PICO_SDK_PATH "/home/mdchaparror/linuxTools/pico-sdk")
+
+# Pull in Pico SDK (must be before project)
+include(pico_sdk_import.cmake)
+
+project(I2C_SCANER C CXX ASM)
+
+set(PICO_CXX_ENABLE_EXCEPTIONS 1)
+
+set(PICO_CXX_ENABLE_RTTI 1)
+
+# Initialise the Pico SDK
+pico_sdk_init()
+
+# Add executable. Default name is the project name, version 0.1
+
+add_executable(I2C_SCANER I2C_SCANER.c )
+
+pico_set_program_name(I2C_SCANER "I2C_SCANER")
+pico_set_program_version(I2C_SCANER "0.1")
+
+pico_enable_stdio_uart(I2C_SCANER 0)
+pico_enable_stdio_usb(I2C_SCANER 1)
+
+# Add the standard library to the build
+target_link_libraries(I2C_SCANER pico_stdlib)
+
+# Add any user requested libraries
+target_link_libraries(I2C_SCANER
+        hardware_i2c
+        )
+
+pico_add_extra_outputs(I2C_SCANER)
+

PICO/I2C_SCANER/I2C_SCANER.c

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+#include <stdio.h>
+#include "pico/stdlib.h"
+#include "hardware/i2c.h"
+
+// I2C defines
+// This example will use I2C0 on GPIO8 (SDA) and GPIO9 (SCL) running at 400KHz.
+// Pins can be changed, see the GPIO function select table in the datasheet for information on GPIO assignments
+#define I2C_PORT i2c0
+#define I2C_SDA 0
+#define I2C_SCL 1
+
+// I2C reserves some addresses for special purposes. We exclude these from the scan.
+// These are any addresses of the form 000 0xxx or 111 1xxx
+bool reserved_addr(uint8_t addr)
+{
+    return (addr & 0x78) == 0 || (addr & 0x78) == 0x78;
+}
+
+int main()
+{
+    stdio_init_all();
+
+    // I2C Initialisation. Using it at 400Khz.
+    i2c_init(I2C_PORT, 400 * 1000);
+
+    gpio_set_function(I2C_SDA, GPIO_FUNC_I2C);
+    gpio_set_function(I2C_SCL, GPIO_FUNC_I2C);
+    gpio_pull_up(I2C_SDA);
+    gpio_pull_up(I2C_SCL);
+
+    int error, address;
+    uint8_t data;
+    int nDevices;
+
+    sleep_ms(5000);
+
+    while (1)
+    {
+
+        printf("Escaneando bus I2C\n");
+        printf("===================\n");
+
+        nDevices = 0;
+
+        for (address = 1; address < 127; address++)
+        {
+
+            if (reserved_addr(address))
+                error = PICO_ERROR_GENERIC;
+            else
+                error = i2c_read_blocking(I2C_PORT, address, &data, 1, false);
+
+            if (error >= 0)
+            {
+                printf("Dispositivo I2C encontrado en 0x%02x \n", address);
+                nDevices = nDevices + 1;
+            }
+        }
+        printf("Encontrados %2x dispositivos I2C\n", nDevices);
+        printf("===================\n");
+        printf("\n");
+        printf("\n");
+        printf("\n");
+        printf("\n");
+
+        sleep_ms(5000);
+    }
+
+    return 0;
+}

PICO/I2C_SCANER/pico_sdk_import.cmake

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+# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
+
+# This can be dropped into an external project to help locate this SDK
+# It should be include()ed prior to project()
+
+if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
+    set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
+    message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
+endif ()
+
+if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
+    set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
+    message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
+endif ()
+
+if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
+    set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
+    message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
+endif ()
+
+set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
+set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
+set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
+
+if (NOT PICO_SDK_PATH)
+    if (PICO_SDK_FETCH_FROM_GIT)
+        include(FetchContent)
+        set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
+        if (PICO_SDK_FETCH_FROM_GIT_PATH)
+            get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
+        endif ()
+        FetchContent_Declare(
+                pico_sdk
+                GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
+                GIT_TAG master
+        )
+        if (NOT pico_sdk)
+            message("Downloading Raspberry Pi Pico SDK")
+            FetchContent_Populate(pico_sdk)
+            set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
+        endif ()
+        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
+    else ()
+        message(FATAL_ERROR
+                "SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
+                )
+    endif ()
+endif ()
+
+get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
+if (NOT EXISTS ${PICO_SDK_PATH})
+    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
+endif ()
+
+set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
+if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
+    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
+endif ()
+
+set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
+
+include(${PICO_SDK_INIT_CMAKE_FILE})