diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | CMakeLists.txt | 36 | ||||
| -rw-r--r-- | led_cube.c | 117 | ||||
| -rw-r--r-- | pico_sdk_import.cmake | 73 |
4 files changed, 228 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d9d8bd8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +build/* +compile_commands.json diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..c05c0c6 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,36 @@ +cmake_minimum_required(VERSION 3.12) + +# Pull in Pico SDK (must be before project) +include(pico_sdk_import.cmake) + +project(led_cube C CXX ASM) +set(CMAKE_C_STANDARD 11) +set(CMAKE_CXX_STANDARD 17) +set(CMAKE_EXPORT_COMPILE_COMMANDS ON) + +set(PICO_EXAMPLES_PATH $(PROJECT_SOURCE_DIR)) + +# Initalise the SDK +pico_sdk_init() + +if (TARGET tinyusb_device) + add_executable(led_cube + led_cube.c + ) + + # pull in common dependencies + target_link_libraries(led_cube + pico_stdlib + pico_multicore + ) + + # enable usb output, disable uart output + pico_enable_stdio_usb(led_cube 1) + pico_enable_stdio_uart(led_cube 0) + + # create map/bin/hex file etc. + pico_add_extra_outputs(led_cube) + + elseif(PICO_ON_DEVICE) + message(WARNING "not building hello_usb because TinyUSB submodule is not initialized in the SDK") +endif() diff --git a/led_cube.c b/led_cube.c new file mode 100644 index 0000000..0d4d255 --- /dev/null +++ b/led_cube.c @@ -0,0 +1,117 @@ +#include "pico/stdlib.h" +#include <stdio.h> +#include <stdint.h> + +// define the pins used controlling 74HC595 +#define DATA_PIN 2 +#define CLOCK_PIN 3 +#define LATCH_PIN 4 + +void init_pins(void) +{ + gpio_init(DATA_PIN); + gpio_init(CLOCK_PIN); + gpio_init(LATCH_PIN); + gpio_set_dir(DATA_PIN, GPIO_OUT); + gpio_set_dir(CLOCK_PIN, GPIO_OUT); + gpio_set_dir(LATCH_PIN, GPIO_OUT); + printf("pin initialization successful!\n"); +} + +uint8_t map[9]; + +// define the order of 74HC595 chain +#define MINUS 0 +#define FIRST_PLUS 1 +#define SECOND_PLUS 2 +#define THIRD_PLUS 3 +#define FOURTH_PLUS 4 +#define FIFTH_PLUS 5 +#define SIXTH_PLUS 6 +#define SEVENTH_PLUS 7 +#define EIGHTH_PLUS 8 + +void init_map(void) +{ + map[0] = MINUS; + map[1] = FIRST_PLUS; + map[2] = SECOND_PLUS; + map[3] = THIRD_PLUS; + map[4] = FOURTH_PLUS; + map[5] = FIFTH_PLUS; + map[6] = SIXTH_PLUS; + map[7] = SEVENTH_PLUS; + map[8] = EIGHTH_PLUS; + +} + +void send_raw_data(uint8_t data[9]) +{ + gpio_put(LATCH_PIN, 0); + for (size_t i = 0; i < 9; i++) { + for (size_t j = 0; j < 8; j++) + { + gpio_put(DATA_PIN, data[map[i]] & (1 << j)); + gpio_put(CLOCK_PIN, 0); + gpio_put(CLOCK_PIN, 1); + } + } + gpio_put(LATCH_PIN, 1); +} + +void send_data(uint8_t floor, uint64_t on_floor) +{ + uint8_t data[9]; + + data[0] = floor; + for (size_t i = 0; i < 8; i++) { + data[i] = (on_floor >> (8 * i)) & 0xFF; + } + + send_raw_data(data); +} + +void draw(uint64_t data[8]) +{ + for (size_t i = 0; i < 8; i++) { + send_data((1 << i), data[i]); + } +} + + +void test(void) +{ + for (size_t i = 0; i < 8; i++) { + send_data((1 << i), 0xFFFFFFFFFFFFFFFF); + sleep_ms(200); + } +} + +void test_every_pin(void) +{ + uint64_t data[8]; + for (size_t x = 0; x < 8; x++) { + for (size_t y = 0; y < 8; y++) { + for (size_t z = 0; z < 8; z++) { + data[z] = 1 << (y * 8 + x); + draw(data); + data[z] = 0; + sleep_ms(20); + } + } + } +} + + +int main() +{ + init_pins(); + init_map(); + + while(1) { + test(); + test_every_pin(); + } + + return 0; +} diff --git a/pico_sdk_import.cmake b/pico_sdk_import.cmake new file mode 100644 index 0000000..65f8a6f --- /dev/null +++ b/pico_sdk_import.cmake @@ -0,0 +1,73 @@ +# 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 "${CMAKE_SOURCE_DIR}") + endif () + # GIT_SUBMODULES_RECURSE was added in 3.17 + if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0") + FetchContent_Declare( + pico_sdk + GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk + GIT_TAG master + GIT_SUBMODULES_RECURSE FALSE + ) + else () + FetchContent_Declare( + pico_sdk + GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk + GIT_TAG master + ) + endif () + + 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}) |