I took parts of code and made the below program. The LCD shows > 13 on the screen. Temp is 13 for some reason, and if I jumper (no keypad yet) D7 to D8 still 13 on display? Any ideas
#chip mega328p, 16#include<UNO_mega328p.h>HI2CModeMaster#define HI2C_DATA#define LCD_IO 10#define LCD_I2C_Address 0x4e '// Change to 0xFE for SainSmart ELSE 4E#define LCD_Backlight_On_State 1 '// These may need to be reversed#define LCD_Backlight_Off_State 0#define KEYPAD_ROW_1 DIGITAL_11#define KEYPAD_ROW_2 DIGITAL_10#define KEYPAD_ROW_3 DIGITAL_9#define KEYPAD_ROW_4 DIGITAL_8#define KEYPAD_COL_1 DIGITAL_7#define KEYPAD_COL_2 DIGITAL_6#define KEYPAD_COL_3 DIGITAL_5#define KEYPAD_COL_4 DIGITAL_4dimTempasByte'MainDo'GetkeyTemp=KeypadData'Ifakeyispressed,thendisplayitIfTemp<>KEY_NONEThenclsprint"> "PrintTemp'WaituntilkeyisreleasedwaitwhileKeypadData<>KEY_NONEclsEndIfLoopEnd
Last edit: lhatch 2018-06-12
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
OK, another question. Anyhone have a 3x4 or 4x4 routine? None of the info mentioned pull up or down on anything, So I pulled from the examples and jumped D7 and D8
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I took parts of code and made the below program. The LCD shows > 13 on the screen. Temp is 13 for some reason, and if I jumper (no keypad yet) D7 to D8 still 13 on display? Any ideas
Last edit: lhatch 2018-06-12
OK, another question. Anyhone have a 3x4 or 4x4 routine? None of the info mentioned pull up or down on anything, So I pulled from the examples and jumped D7 and D8
In the Help.
Pull-ups or pull-downs go on the columns only, and are typically 4.7k to 10k in value.
See if this resolves the issue.
4.7K pull-up seems to have done the trick. Thanks Will have keypads today and give the real test.