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Fix bug spi init; Fix random string + flickering

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Fix bug where sartup randomly crasehd several times because spi config
was initialized with random data -> init with 0

Fix bug where length now was not truncated resulting in flickerin

Fix bug in welcome message where hello string contained random data
This commit is contained in:
jonny_l480 2022-08-21 14:08:59 +02:00
parent 01c5db39c1
commit c8ffd94fe9
3 changed files with 8 additions and 2 deletions
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2
main/control.cpp
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@ -328,7 +328,7 @@ void task_control(void *pvParameter)
// 123456789
//limit length to 8 digits + decimal point (drop decimal places when it does not fit)
sprintf(buf_disp1, "%.9s", buf_tmp);
display1_showString(buf_tmp);
display1_showString(buf_disp1);
//--- show target length on display2 ---
//sprintf(buf_disp2, "%06.1f cm", (float)lengthTarget/10); //cm

6
main/display.cpp
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@ -9,8 +9,11 @@ max7219_t display;
//===== init display =====
//========================
void display_init(){
ESP_LOGI(TAG, "initializing display...");
// Configure SPI bus
spi_bus_config_t cfg;
memset(&cfg, 0, sizeof(spi_bus_config_t)); //init bus config with 0 to prevent bugs with random flags
cfg.mosi_io_num = DISPLAY_PIN_NUM_MOSI;
cfg.miso_io_num = -1;
cfg.sclk_io_num = DISPLAY_PIN_NUM_CLK;
@ -31,6 +34,7 @@ void display_init(){
ESP_ERROR_CHECK(max7219_set_brightness(&dev, 12));
//return dev;
display = dev;
ESP_LOGI(TAG, "initializing display - done");
}
@ -49,7 +53,7 @@ void display_ShowWelcomeMsg(){
//scroll "hello" over 2 displays
for (int offset = 0; offset < 23; offset++) {
max7219_clear(&display);
char hello[23] = " HELL0 ";
char hello[40] = " HELL0 ";
max7219_draw_text_7seg(&display, 0, hello + (22 - offset) );
vTaskDelay(pdMS_TO_TICKS(50));
}

2
main/display.hpp
View File

@ -13,6 +13,8 @@ extern "C"
#include <max7219.h>
#include "rotary_encoder.h"
}
#include <cstring>
#include "config.hpp"