b405a22cd1
* api-hal-gpio: rework gpio on ll * one_wire_slave: rework gpio initialization * interrupts: add attribute weak to hal exti interrupts handlers * api-hal-gpio: add exti interrupt handlers * input: rework with api-hal-gpio interrupts * one_wire_slave: rework with api-hal-gpio interrupts * api-hal-gpio: fix incorrect exti line config * api-hal-gpio: add doxygen documentation * api-hal-gpio: add enable / disable interrupts * api-hal-gpio: add get_rfid_level * core: remove api-gpio * applications: rework gpio with api-hal-gpio * lib: rework gpio with api-hal-gpio * rfal: disable exti interrupt when rfal is inactive * rfal: add interrupt gpio reinitialization * api-hal-gpio: hide setting speed and pull mode LL implementation * stm32wbxx_it: remove unused EXTI handlers * api-hal-gpio: guard set, enable, disable and remove interrupt * Drop F4 target * Accessor: update gpio api usage Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
#include <furi.h>
|
|
#include <api-hal.h>
|
|
|
|
void prepare_data(uint32_t ID, uint32_t VENDOR, uint8_t* data) {
|
|
uint8_t value[10];
|
|
|
|
// vendor rows (4 bit in a row)
|
|
value[0] = (VENDOR >> 4) & 0xF;
|
|
value[1] = VENDOR & 0xF;
|
|
|
|
const uint8_t ROW_SIZE = 4;
|
|
const uint8_t HEADER_SIZE = 9;
|
|
|
|
// ID rows (4 bit in a row)
|
|
for(int i = 0; i < 8; i++) {
|
|
value[i + 2] = (ID >> (28 - i * ROW_SIZE)) & 0xF;
|
|
}
|
|
|
|
for(uint8_t i = 0; i < HEADER_SIZE; i++) {
|
|
data[i] = 1; // header
|
|
}
|
|
|
|
for(uint8_t i = 0; i < 10; i++) { // data
|
|
for(uint8_t j = 0; j < ROW_SIZE; j++) {
|
|
data[HEADER_SIZE + i * (ROW_SIZE + 1) + j] = (value[i] >> ((ROW_SIZE - 1) - j)) & 1;
|
|
}
|
|
|
|
// row parity
|
|
data[HEADER_SIZE + i * (ROW_SIZE + 1) + ROW_SIZE] =
|
|
(data[HEADER_SIZE + i * (ROW_SIZE + 1) + 0] +
|
|
data[HEADER_SIZE + i * (ROW_SIZE + 1) + 1] +
|
|
data[HEADER_SIZE + i * (ROW_SIZE + 1) + 2] +
|
|
data[HEADER_SIZE + i * (ROW_SIZE + 1) + 3]) %
|
|
2;
|
|
}
|
|
|
|
for(uint8_t i = 0; i < ROW_SIZE; i++) { //checksum
|
|
uint8_t checksum = 0;
|
|
for(uint8_t j = 0; j < 10; j++) {
|
|
checksum += data[HEADER_SIZE + i + j * (ROW_SIZE + 1)];
|
|
}
|
|
data[i + 59] = checksum % 2;
|
|
}
|
|
|
|
data[63] = 0; // stop bit
|
|
|
|
/*
|
|
printf("em data: ");
|
|
for(uint8_t i = 0; i < 64; i++) {
|
|
printf("%d ", data[i]);
|
|
}
|
|
printf("\r\n");
|
|
*/
|
|
}
|
|
|
|
void em4100_emulation(uint8_t* data, GpioPin* pin) {
|
|
taskENTER_CRITICAL();
|
|
hal_gpio_write(pin, true);
|
|
|
|
for(uint8_t i = 0; i < 8; i++) {
|
|
for(uint8_t j = 0; j < 64; j++) {
|
|
delay_us(260);
|
|
hal_gpio_write(pin, data[j]);
|
|
delay_us(260);
|
|
hal_gpio_write(pin, !data[j]);
|
|
}
|
|
}
|
|
|
|
hal_gpio_write(pin, false);
|
|
taskEXIT_CRITICAL();
|
|
}
|