Initial commit
EmaMaker
commit
1d72873f0d
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@ -0,0 +1,3 @@
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build
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build.sh
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.vscode
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@ -0,0 +1,52 @@
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# Generated Cmake Pico project file
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cmake_minimum_required(VERSION 3.13)
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set(CMAKE_C_STANDARD 11)
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set(CMAKE_CXX_STANDARD 17)
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# Initialise pico_sdk from installed location
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# (note this can come from environment, CMake cache etc)
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set(PICO_SDK_PATH "/usr/share/pico-sdk")
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set(PICO_BOARD pico CACHE STRING "Board type")
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# Pull in Raspberry Pi Pico SDK (must be before project)
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include(pico_sdk_import.cmake)
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if (PICO_SDK_VERSION_STRING VERSION_LESS "1.4.0")
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message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.4.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
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endif()
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project(SDA5708 C CXX ASM)
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# Initialise the Raspberry Pi Pico SDK
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pico_sdk_init()
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# Add executable. Default name is the project name, version 0.1
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add_executable(SDA5708 SDA5708.c sda5708.c )
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pico_set_program_name(SDA5708 "SDA5708")
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pico_set_program_version(SDA5708 "0.1")
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pico_enable_stdio_uart(SDA5708 0)
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pico_enable_stdio_usb(SDA5708 1)
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# Add the standard library to the build
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target_link_libraries(SDA5708
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pico_stdlib)
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# Add the standard include files to the build
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target_include_directories(SDA5708 PRIVATE
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${CMAKE_CURRENT_LIST_DIR}
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${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
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)
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# Add any user requested libraries
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target_link_libraries(SDA5708
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hardware_spi
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)
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pico_add_extra_outputs(SDA5708)
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@ -0,0 +1,7 @@
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The SDA5708 is 8 digit 7x5 led matrix display, the font used by the hardware is defined in software
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This is a C library and example to control the display using a Raspberry Pi Pico communicating with the display using SPI.
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Hardware reference: [https://www.sbprojects.net/knowledge/footprints/sda5708/index.php](!https://www.sbprojects.net/knowledge/footprints/sda5708/index.php).
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You can copy the files `sda5708.h` `sda5708.c` `sda5708_fonts.h` for use in another Pico project
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@ -0,0 +1,78 @@
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "sda5708.h"
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#include "sda5708_fonts.h"
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#define BUF_LEN 27
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int main() {
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#if !defined(spi_default) || !defined(PICO_DEFAULT_SPI_SCK_PIN) || !defined(PICO_DEFAULT_SPI_TX_PIN) || !defined(PICO_DEFAULT_SPI_RX_PIN) || !defined(PICO_DEFAULT_SPI_CSN_PIN)
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#warning spi/spi_master example requires a board with SPI pins
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puts("Default SPI pins were not defined");
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#else
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printf("SPI master example\n");
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sda5708_init(spi_default, PICO_DEFAULT_SPI_TX_PIN, PICO_DEFAULT_SPI_SCK_PIN, PICO_DEFAULT_SPI_CSN_PIN);
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sda5708_clear(spi_default);
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sda5708_set_brightness(spi_default, 3);
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sda5708_set_max_current(spi_default, 0);
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/*int i = 0, a = 1;
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while(1){
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sda5708_clear(spi_default);
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sda5708_select_digit(spi_default, i);
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sda5708_write_character(spi_default, letter_O);
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i += a;
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if( i >= 7 || i <= 0) a = -a;
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sleep_ms(500);
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}*/
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uint8_t* buf[BUF_LEN] = {
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letter_A,
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letter_B,
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letter_C,
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letter_D,
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letter_E,
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letter_F,
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letter_G,
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letter_H,
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letter_I,
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letter_J,
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letter_K,
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letter_L,
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letter_M,
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letter_N,
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letter_O,
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letter_P,
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letter_Q,
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letter_R,
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letter_S,
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letter_T,
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letter_U,
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letter_V,
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letter_W,
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letter_X,
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letter_Y,
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letter_Z,
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character_empty
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};
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int off = 0;
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while(1){
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sda5708_clear(spi_default);
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for(int i = 0; i < 8; i++){
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sda5708_select_digit(spi_default, i);
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sda5708_write_character(spi_default, buf [(off+i) % BUF_LEN]);
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}
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off = (off+1) % BUF_LEN;
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sleep_ms(350);
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}
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#endif
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}
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@ -0,0 +1,73 @@
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# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
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# This can be dropped into an external project to help locate this SDK
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# It should be include()ed prior to project()
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if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
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set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
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message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
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set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
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message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
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set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
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message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
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endif ()
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set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
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set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
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set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
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if (NOT PICO_SDK_PATH)
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if (PICO_SDK_FETCH_FROM_GIT)
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include(FetchContent)
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set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
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if (PICO_SDK_FETCH_FROM_GIT_PATH)
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get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
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endif ()
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# GIT_SUBMODULES_RECURSE was added in 3.17
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if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG master
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GIT_SUBMODULES_RECURSE FALSE
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)
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else ()
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG master
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)
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endif ()
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if (NOT pico_sdk)
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message("Downloading Raspberry Pi Pico SDK")
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FetchContent_Populate(pico_sdk)
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set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
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endif ()
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set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
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else ()
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message(FATAL_ERROR
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"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
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)
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endif ()
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endif ()
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get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
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if (NOT EXISTS ${PICO_SDK_PATH})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
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endif ()
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set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
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if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
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endif ()
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set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
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include(${PICO_SDK_INIT_CMAKE_FILE})
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@ -0,0 +1,83 @@
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#include "sda5708.h"
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/* Display has 8 levels of brightness. We encode that as level:
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0 (lowest): needs 0b111 (7) to be sent to the display
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7 (highest): needs 0b000 (0) to be sent to the display
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The order of the bits needs to be reversed
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*/
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uint8_t brightness_lookup[] = {
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0b11100000,
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0b01100000,
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0b10100000,
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0b00100000,
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0b11000000,
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0b01000000,
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0b10000000,
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0b00000000
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};
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// The digits need to be reversed too
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uint8_t digit_lookup[] = {
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0b00000000,
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0b10000000,
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0b01000000,
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0b11000000,
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0b00100000,
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0b10100000,
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0b01100000,
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0b11100000
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};
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uint8_t BRIGHTNESS_LEVEL = 0b000;
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bool PEAK_CURRENT = 0b0;
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void sda5708_init(spi_inst_t *spi, int SPI_DATA_PIN, int SPI_CLOCK_PIN, int SPI_LOAD_PIN){
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// Enable SPI 0 at 1 MHz and connect to GPIOs
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spi_init(spi_default, 1000*1000);
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gpio_set_function(SPI_DATA_PIN, GPIO_FUNC_SPI);
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gpio_set_function(SPI_CLOCK_PIN, GPIO_FUNC_SPI);
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gpio_set_function(SPI_LOAD_PIN, GPIO_FUNC_SPI);
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// Make the SPI pins available to picotool
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bi_decl(bi_4pins_with_func(PICO_DEFAULT_SPI_RX_PIN, PICO_DEFAULT_SPI_TX_PIN, PICO_DEFAULT_SPI_SCK_PIN, PICO_DEFAULT_SPI_CSN_PIN, GPIO_FUNC_SPI));
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}
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// Clear the screen
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void sda5708_clear(spi_inst_t *spi){
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// This whole sharade of bitwise operations is needed because the hardware reads the bits in the
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// bytes in reverse order (considers MSB the LSB)
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uint8_t out[] ={
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BRIGHTNESS_LEVEL | (PEAK_CURRENT << 5) | 0b00000011, //clear
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BRIGHTNESS_LEVEL | (PEAK_CURRENT << 5) | 0b00000111 //return to normal
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};
|
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|
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spi_write_blocking(spi, out, 2);
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}
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|
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// The display only has 8 level of brightness [0, 7].
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void sda5708_set_brightness(spi_inst_t* spi, uint8_t brightness){
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if(brightness > 7) brightness = 7;
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BRIGHTNESS_LEVEL = brightness_lookup[brightness];
|
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uint8_t b = BRIGHTNESS_LEVEL | (PEAK_CURRENT << 5) | 0b00000111; //return to normal
|
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|
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spi_write_blocking(spi, &b, 1);
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}
|
||||
|
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void sda5708_set_max_current(spi_inst_t* spi, bool current){
|
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PEAK_CURRENT = current;
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}
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|
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// The display only has 8 digits
|
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void sda5708_select_digit(spi_inst_t* spi, uint8_t digit){
|
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if(digit > 7) digit = 7;
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uint8_t b = digit_lookup[digit] | 0b00000101;
|
||||
|
||||
spi_write_blocking(spi, &b, 1);
|
||||
}
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|
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//Writs a character to the select digit
|
||||
void sda5708_write_character(spi_inst_t* spi, uint8_t* letter){
|
||||
spi_write_blocking(spi, letter, 7);
|
||||
}
|
||||
|
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@ -0,0 +1,34 @@
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#ifndef SDA5708_H
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||||
#define SDA5707_H
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||||
|
||||
#include <stdbool.h>
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||||
|
||||
#include "hardware/spi.h"
|
||||
#include "pico/stdlib.h"
|
||||
#include "pico/binary_info.h"
|
||||
|
||||
/* Hardware reference: https://www.sbprojects.net/knowledge/footprints/sda5708/index.php
|
||||
The article is actually wrong, has each byte needs to be sent in reverse (MSB in place of LSB)
|
||||
The display receives commands in SPI, but names the pins differently
|
||||
|
||||
SPI_DATA_PIN -> SPI TX (MOSI)
|
||||
SPI_LOAD_PIN -> SPI CS (Chip Select)
|
||||
SPI_CLOCK_PIN -> SPI SCLK
|
||||
|
||||
Since the display does not send information back, there is no need to setup a RX (MISO) pin
|
||||
*/
|
||||
|
||||
// Init SPI communication with the display
|
||||
void sda5708_init(spi_inst_t *spi, int SPI_DATA_PIN, int SPI_CLOCK_PIN, int SPI_LOAD_PIN);
|
||||
// Clear the screen
|
||||
void sda5708_clear(spi_inst_t *spi);
|
||||
// The display only has 8 level of brightness [0, 7].
|
||||
void sda5708_set_brightness(spi_inst_t* spi, uint8_t brightness);
|
||||
// The display has two modes: max current (0), 12.5% max current(1);
|
||||
void sda5708_set_max_current(spi_inst_t* spi, bool current);
|
||||
// The display only has 8 digits
|
||||
void sda5708_select_digit(spi_inst_t* spi, uint8_t digit);
|
||||
//Writs a character to the select digit
|
||||
void sda5708_write_character(spi_inst_t*, uint8_t* letter);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,248 @@
|
|||
#ifndef SDA5708_FONTS_H
|
||||
#define SDA5708_H
|
||||
|
||||
uint8_t letter_A[] = { 0b00100000,
|
||||
0b01010000,
|
||||
0b01010000,
|
||||
0b11111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_B[] = { 0b01111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01111000
|
||||
};
|
||||
|
||||
uint8_t letter_C[] = { 0b11110000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b11110000
|
||||
};
|
||||
|
||||
uint8_t letter_D[] = { 0b01111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01111000
|
||||
};
|
||||
|
||||
uint8_t letter_E[] = { 0b11111000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b11111000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b11111000
|
||||
};
|
||||
|
||||
uint8_t letter_F[] = { 0b11111000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b01111000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000
|
||||
};
|
||||
|
||||
uint8_t letter_G[] = { 0b11110000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b11001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b11110000
|
||||
};
|
||||
|
||||
uint8_t letter_H[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b11111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_I[] = { 0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000
|
||||
};
|
||||
|
||||
uint8_t letter_J[] = { 0b10000000,
|
||||
0b10000000,
|
||||
0b10000000,
|
||||
0b10000000,
|
||||
0b10000000,
|
||||
0b10000000,
|
||||
0b01110000
|
||||
};
|
||||
|
||||
uint8_t letter_K[] = { 0b10001000,
|
||||
0b01001000,
|
||||
0b00101000,
|
||||
0b00011000,
|
||||
0b00101000,
|
||||
0b01001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_L[] = { 0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b11111000
|
||||
};
|
||||
|
||||
uint8_t letter_M[] = { 0b10001000,
|
||||
0b11011000,
|
||||
0b10101000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_N[] = { 0b10001000,
|
||||
0b10011000,
|
||||
0b10101000,
|
||||
0b10101000,
|
||||
0b11001000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_O[] = { 0b01110000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01110000
|
||||
};
|
||||
|
||||
uint8_t letter_P[] = { 0b01111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01111000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b00001000
|
||||
};
|
||||
|
||||
uint8_t letter_Q[] = { 0b01110000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01110000,
|
||||
0b10000000
|
||||
};
|
||||
|
||||
uint8_t letter_R[] = { 0b01111000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01111000,
|
||||
0b01001000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_S[] = { 0b11110000,
|
||||
0b00001000,
|
||||
0b00001000,
|
||||
0b01110000,
|
||||
0b10000000,
|
||||
0b10000000,
|
||||
0b01111000
|
||||
};
|
||||
|
||||
uint8_t letter_T[] = { 0b11111000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000
|
||||
};
|
||||
|
||||
uint8_t letter_U[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01110000
|
||||
};
|
||||
|
||||
uint8_t letter_V[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b01010000,
|
||||
0b01010000,
|
||||
0b00100000
|
||||
};
|
||||
|
||||
uint8_t letter_W[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b10001000,
|
||||
0b10101000,
|
||||
0b10101000,
|
||||
0b10101000,
|
||||
0b01110000
|
||||
};
|
||||
|
||||
uint8_t letter_X[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b01010000,
|
||||
0b00100000,
|
||||
0b01010000,
|
||||
0b10001000,
|
||||
0b10001000
|
||||
};
|
||||
|
||||
uint8_t letter_Y[] = { 0b10001000,
|
||||
0b10001000,
|
||||
0b01010000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000,
|
||||
0b00100000
|
||||
};
|
||||
|
||||
uint8_t letter_Z[] = { 0b11111000,
|
||||
0b10000000,
|
||||
0b01000000,
|
||||
0b00100000,
|
||||
0b00010000,
|
||||
0b00001000,
|
||||
0b11111000
|
||||
};
|
||||
|
||||
|
||||
uint8_t character_empty[] = { 0b00000000,
|
||||
0b00000000,
|
||||
0b00000000,
|
||||
0b00000000,
|
||||
0b00000000,
|
||||
0b00000000,
|
||||
0b00000000
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue