fb80f9537f
* Rfid: fixed HID emulation by adding zero pulse every 4 bits * Rfid: HID emulation fixed with DSP based FSK oscillator.
272 lines
9.3 KiB
C
272 lines
9.3 KiB
C
#include <api-hal-rfid.h>
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#include <api-hal-ibutton.h>
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#include <api-hal-resources.h>
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#define LFRFID_READ_TIM htim1
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#define LFRFID_READ_CHANNEL TIM_CHANNEL_1
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#define LFRFID_EMULATE_TIM htim2
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#define LFRFID_EMULATE_CHANNEL TIM_CHANNEL_3
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void api_hal_rfid_pins_reset() {
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// ibutton bus disable
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api_hal_ibutton_stop();
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// pulldown rfid antenna
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hal_gpio_init(&gpio_rfid_carrier_out, GpioModeOutputPushPull, GpioSpeedLow, GpioPullNo);
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hal_gpio_write(&gpio_rfid_carrier_out, false);
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// from both sides
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hal_gpio_init(&gpio_rfid_pull, GpioModeOutputPushPull, GpioSpeedLow, GpioPullNo);
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hal_gpio_write(&gpio_rfid_pull, true);
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}
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void api_hal_rfid_pins_emulate() {
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// ibutton low
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api_hal_ibutton_start();
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api_hal_ibutton_pin_low();
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// pull pin to timer out
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hal_gpio_init_ex(
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&gpio_rfid_pull, GpioModeAltFunctionPushPull, GpioSpeedLow, GpioPullNo, GpioAltFn1TIM2);
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// pull rfid antenna from carrier side
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hal_gpio_init(&gpio_rfid_carrier_out, GpioModeOutputPushPull, GpioSpeedLow, GpioPullNo);
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hal_gpio_write(&gpio_rfid_carrier_out, false);
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}
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void api_hal_rfid_pins_read() {
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// ibutton low
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api_hal_ibutton_start();
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api_hal_ibutton_pin_low();
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// dont pull rfid antenna
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hal_gpio_init(&gpio_rfid_pull, GpioModeOutputPushPull, GpioSpeedLow, GpioPullNo);
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hal_gpio_write(&gpio_rfid_pull, false);
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// carrier pin to timer out
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hal_gpio_init_ex(
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&gpio_rfid_carrier_out,
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GpioModeAltFunctionPushPull,
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GpioSpeedLow,
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GpioPullNo,
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GpioAltFn1TIM1);
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// comparator in
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hal_gpio_init(&gpio_rfid_data_in, GpioModeAnalog, GpioSpeedLow, GpioPullNo);
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}
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void api_hal_rfid_tim_read(float freq, float duty_cycle) {
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// TODO LL init
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uint32_t period = (uint32_t)((SystemCoreClock) / freq) - 1;
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TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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TIM_MasterConfigTypeDef sMasterConfig = {0};
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TIM_OC_InitTypeDef sConfigOC = {0};
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TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
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// basic PWM setup with needed freq and internal clock
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LFRFID_READ_TIM.Init.Prescaler = 0;
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LFRFID_READ_TIM.Init.CounterMode = TIM_COUNTERMODE_UP;
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LFRFID_READ_TIM.Init.Period = period;
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LFRFID_READ_TIM.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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LFRFID_READ_TIM.Init.RepetitionCounter = 0;
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LFRFID_READ_TIM.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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if(HAL_TIM_Base_Init(&LFRFID_READ_TIM) != HAL_OK) {
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Error_Handler();
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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if(HAL_TIM_ConfigClockSource(&LFRFID_READ_TIM, &sClockSourceConfig) != HAL_OK) {
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Error_Handler();
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}
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if(HAL_TIM_PWM_Init(&LFRFID_READ_TIM) != HAL_OK) {
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Error_Handler();
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}
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// no master-slave mode
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sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
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sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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if(HAL_TIMEx_MasterConfigSynchronization(&LFRFID_READ_TIM, &sMasterConfig) != HAL_OK) {
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Error_Handler();
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}
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// pwm config
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sConfigOC.OCMode = TIM_OCMODE_PWM1;
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sConfigOC.Pulse = (uint32_t)(LFRFID_READ_TIM.Init.Period * duty_cycle);
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sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
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sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
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sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
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sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
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sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
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if(HAL_TIM_OC_ConfigChannel(&LFRFID_READ_TIM, &sConfigOC, LFRFID_READ_CHANNEL) != HAL_OK) {
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Error_Handler();
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}
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// no deadtime
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sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
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sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
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sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
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sBreakDeadTimeConfig.DeadTime = 0;
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sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
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sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
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sBreakDeadTimeConfig.BreakFilter = 0;
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sBreakDeadTimeConfig.BreakAFMode = TIM_BREAK_AFMODE_INPUT;
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sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
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sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
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sBreakDeadTimeConfig.Break2Filter = 0;
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sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;
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sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
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if(HAL_TIMEx_ConfigBreakDeadTime(&LFRFID_READ_TIM, &sBreakDeadTimeConfig) != HAL_OK) {
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Error_Handler();
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}
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}
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void api_hal_rfid_tim_read_start() {
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HAL_TIMEx_PWMN_Start(&LFRFID_READ_TIM, LFRFID_READ_CHANNEL);
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}
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void api_hal_rfid_tim_read_stop() {
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HAL_TIMEx_PWMN_Stop(&LFRFID_READ_TIM, LFRFID_READ_CHANNEL);
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}
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void api_hal_rfid_tim_emulate(float freq) {
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// TODO LL init
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uint32_t prescaler = (uint32_t)((SystemCoreClock) / freq) - 1;
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TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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TIM_MasterConfigTypeDef sMasterConfig = {0};
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TIM_OC_InitTypeDef sConfigOC = {0};
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TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
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// basic PWM setup with needed freq and internal clock
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LFRFID_EMULATE_TIM.Init.Prescaler = prescaler;
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LFRFID_EMULATE_TIM.Init.CounterMode = TIM_COUNTERMODE_UP;
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LFRFID_EMULATE_TIM.Init.Period = 1;
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LFRFID_EMULATE_TIM.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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LFRFID_EMULATE_TIM.Init.RepetitionCounter = 0;
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LFRFID_EMULATE_TIM.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
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if(HAL_TIM_Base_Init(&LFRFID_EMULATE_TIM) != HAL_OK) {
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Error_Handler();
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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if(HAL_TIM_ConfigClockSource(&LFRFID_EMULATE_TIM, &sClockSourceConfig) != HAL_OK) {
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Error_Handler();
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}
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if(HAL_TIM_PWM_Init(&LFRFID_EMULATE_TIM) != HAL_OK) {
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Error_Handler();
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}
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// no master-slave mode
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sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
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sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
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if(HAL_TIMEx_MasterConfigSynchronization(&LFRFID_EMULATE_TIM, &sMasterConfig) != HAL_OK) {
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Error_Handler();
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}
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// pwm config
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sConfigOC.OCMode = TIM_OCMODE_PWM1;
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sConfigOC.Pulse = 1;
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sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
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sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
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sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
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sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
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sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
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if(HAL_TIM_PWM_ConfigChannel(&LFRFID_EMULATE_TIM, &sConfigOC, LFRFID_EMULATE_CHANNEL) !=
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HAL_OK) {
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Error_Handler();
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}
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// no deadtime
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sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
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sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
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sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
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sBreakDeadTimeConfig.DeadTime = 0;
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sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
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sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
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sBreakDeadTimeConfig.BreakFilter = 0;
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sBreakDeadTimeConfig.BreakAFMode = TIM_BREAK_AFMODE_INPUT;
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sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
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sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
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sBreakDeadTimeConfig.Break2Filter = 0;
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sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;
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sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
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if(HAL_TIMEx_ConfigBreakDeadTime(&LFRFID_EMULATE_TIM, &sBreakDeadTimeConfig) != HAL_OK) {
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Error_Handler();
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}
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}
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void api_hal_rfid_tim_emulate_start() {
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// TODO make api for interrupts priority
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for(size_t i = WWDG_IRQn; i <= DMAMUX1_OVR_IRQn; i++) {
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HAL_NVIC_SetPriority(i, 15, 0);
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}
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HAL_NVIC_SetPriority(TIM2_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(TIM2_IRQn);
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HAL_TIM_PWM_Start_IT(&LFRFID_EMULATE_TIM, LFRFID_EMULATE_CHANNEL);
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HAL_TIM_Base_Start_IT(&LFRFID_EMULATE_TIM);
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}
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void api_hal_rfid_tim_emulate_stop() {
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HAL_TIM_Base_Stop(&LFRFID_EMULATE_TIM);
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HAL_TIM_PWM_Stop(&LFRFID_EMULATE_TIM, LFRFID_EMULATE_CHANNEL);
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}
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void api_hal_rfid_tim_reset() {
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HAL_TIM_Base_DeInit(&LFRFID_READ_TIM);
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HAL_TIM_Base_DeInit(&LFRFID_EMULATE_TIM);
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}
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bool api_hal_rfid_is_tim_emulate(TIM_HandleTypeDef* hw) {
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return (hw == &LFRFID_EMULATE_TIM);
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}
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void api_hal_rfid_set_emulate_period(uint32_t period) {
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LFRFID_EMULATE_TIM.Instance->ARR = period;
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}
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void api_hal_rfid_set_emulate_pulse(uint32_t pulse) {
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switch(LFRFID_EMULATE_CHANNEL) {
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case TIM_CHANNEL_1:
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LFRFID_EMULATE_TIM.Instance->CCR1 = pulse;
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break;
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case TIM_CHANNEL_2:
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LFRFID_EMULATE_TIM.Instance->CCR2 = pulse;
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break;
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case TIM_CHANNEL_3:
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LFRFID_EMULATE_TIM.Instance->CCR3 = pulse;
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break;
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case TIM_CHANNEL_4:
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LFRFID_EMULATE_TIM.Instance->CCR4 = pulse;
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break;
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default:
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furi_check(0);
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break;
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}
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}
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void api_hal_rfid_set_read_period(uint32_t period) {
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LFRFID_TIM.Instance->ARR = period;
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}
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void api_hal_rfid_set_read_pulse(uint32_t pulse) {
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switch(LFRFID_READ_CHANNEL) {
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case TIM_CHANNEL_1:
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LFRFID_TIM.Instance->CCR1 = pulse;
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break;
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case TIM_CHANNEL_2:
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LFRFID_TIM.Instance->CCR2 = pulse;
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break;
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case TIM_CHANNEL_3:
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LFRFID_TIM.Instance->CCR3 = pulse;
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break;
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case TIM_CHANNEL_4:
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LFRFID_TIM.Instance->CCR4 = pulse;
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break;
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default:
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furi_check(0);
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break;
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}
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} |