test program for keypad(Extended not only 3x4 but 4x4,4x5 and 5x5 keys)
Fork of study_step0 by
see /users/kenjiArai/notebook/keypadkey-matrix--control/
key_4x4.cpp
- Committer:
- kenjiArai
- Date:
- 2021-02-18
- Revision:
- 5:53fb9eed6b67
- Parent:
- 4:0564f82dd0ef
File content as of revision 5:53fb9eed6b67:
/* * Mbed Application program * * Copyright (c) 2020,'21 Kenji Arai / JH1PJL * http://www7b.biglobe.ne.jp/~kenjia/ * https://os.mbed.com/users/kenjiArai/ * Created: April 5th, 2020 * Revised: February 18th, 2021 */ // Pre-selection -------------------------------------------------------------- #include "select_example.h" //#define KEY4X4 #ifdef KEY4X4 // Include -------------------------------------------------------------------- #include "mbed.h" #include "Keypad.h" // Definition ----------------------------------------------------------------- #if (MBED_MAJOR_VERSION == 2) || (MBED_MAJOR_VERSION == 5) # define WAIT_100MS() {wait_us(100000);} #else # define WAIT_100MS() {ThisThread::sleep_for(100ms);} #endif // Object --------------------------------------------------------------------- DigitalOut my_led(LED1); // X Y Z W A B C D OUT(XYZW), IN(ABCD) Keypad key(D11, D10, D9, D8, D6, D5, D4, D3); // RAM ------------------------------------------------------------------------ // ROM / Constant data -------------------------------------------------------- // X*A = *, X*B = 7, X*C = 4, X*D = 1 // Y*A = 0, Y*B = 8, Y*C = 5, Y*D = 2 // Z*A = #, Z*B = 9, Z*C = 6, Z*D = 3 // W*A = A, W*B = B, W*C = C, W*D = D // key_table[0]=? is not used! const char *const key_table = "?*7410852#963ABCD"; // 1234567890123456 // Function prototypes -------------------------------------------------------- extern void print_revision(void); //------------------------------------------------------------------------------ // Control Program //------------------------------------------------------------------------------ int main() { uint32_t key_num; uint32_t counter = 0; print_revision(); printf("Start Key-Pad test 4x4 keys\r\n"); while(true) { while ((key_num = key.read()) != 0) { printf("%2u:[%2d] %c\r\n", counter++, key_num, *(key_table + key_num)); } WAIT_100MS(); } } #endif // #ifdef KEY4X4