diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/examples/proprietary_rf/gzll/gzp_desktop_emulator/mouse_sensor_emulator.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/examples/proprietary_rf/gzll/gzp_desktop_emulator/mouse_sensor_emulator.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/proprietary_rf/gzll/gzp_desktop_emulator/mouse_sensor_emulator.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/proprietary_rf/gzll/gzp_desktop_emulator/mouse_sensor_emulator.c new file mode 100644 index 0000000..0a1afcd --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/proprietary_rf/gzll/gzp_desktop_emulator/mouse_sensor_emulator.c @@ -0,0 +1,177 @@ +/** + * Copyright (c) 2012 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +/** + * @file + * @brief Implementation of mouse_sensor_emulate.h. + */ + +#include "mouse_sensor_emulator.h" + +#define MOUSE_SENSOR_TIMER NRF_TIMER1 ///< Timer 1 is used to emulate the mouse. +#define MOUSE_SENSOR_TIMER_PERPOWER_Msk POWER_PERPOWER_TIMER1_Msk ///< Power mask for Timer 1 peripheral. +#define MOUSE_SENSOR_TIMER_IRQn TIMER1_IRQn ///< Mouse interrupt set to Timer 1's interrupt. +#define MOUSE_SENSOR_TIMER_IRQ_HANDLER TIMER1_IRQHandler ///< Mouse interrupt handler set to Timer 1's interrupt handler. + +/** + * @struct mouse_sensor_status_t + * @brief Data structure holding internal mouse sensor variables. + */ +typedef struct +{ + int32_t acc_x; ///< Accumulator holding accumulated mouse samples. + int32_t acc_y; ///< Accumulator holding accumulated mouse samples. + bool enabled; ///< Mouse sensor enabled / disabled flag. + bool sample_ready; ///< Mouse sensor sample ready flag. +} mouse_sensor_status_t; + +static mouse_sensor_status_t mouse_sensor_status; ///< Internal mouse sensor variables. + +bool mouse_sensor_init(mouse_sensor_sample_period_t sample_period) +{ + mouse_sensor_status.acc_x = 0; + mouse_sensor_status.acc_y = 0; + mouse_sensor_status.sample_ready = false; + mouse_sensor_status.enabled = false; + + MOUSE_SENSOR_TIMER->TASKS_STOP = 1; + MOUSE_SENSOR_TIMER->TASKS_CLEAR = 1; + MOUSE_SENSOR_TIMER->INTENCLR = 0xffffffff; + MOUSE_SENSOR_TIMER->INTENSET = TIMER_INTENSET_COMPARE0_Msk; + + MOUSE_SENSOR_TIMER->SHORTS = (1 << TIMER_SHORTS_COMPARE0_CLEAR_Pos); + MOUSE_SENSOR_TIMER->PRESCALER = 4; // Ensures 1 us resolution @ 16MHz + + switch (sample_period) + { + case MOUSE_SENSOR_SAMPLE_PERIOD_4_MS: + MOUSE_SENSOR_TIMER->CC[0] = 4000; + break; + + case MOUSE_SENSOR_SAMPLE_PERIOD_8_MS: + default: + MOUSE_SENSOR_TIMER->CC[0] = 8000; + break; + } + + NVIC_ClearPendingIRQ(MOUSE_SENSOR_TIMER_IRQn); + NVIC_EnableIRQ(MOUSE_SENSOR_TIMER_IRQn); + return true; +} + + +void mouse_sensor_enable(void) +{ + MOUSE_SENSOR_TIMER->TASKS_CLEAR = 1; + MOUSE_SENSOR_TIMER->TASKS_START = 1; +} + + +void mouse_sensor_disable(void) +{ + MOUSE_SENSOR_TIMER->TASKS_STOP = 1; +} + + +bool mouse_sensor_data_is_ready(void) +{ + return mouse_sensor_status.sample_ready; +} + + +bool mouse_sensor_read(uint8_t * out_mouse_packet) +{ + if (mouse_sensor_status.sample_ready) + { + out_mouse_packet[NRFR_REPORT_ID] = NRFR_MOUSE_MOV_REPORT_ID; + out_mouse_packet[NRFR_MOUSE_MOV_XLSBYTE] = mouse_sensor_status.acc_y; + out_mouse_packet[NRFR_MOUSE_MOV_YLSNIB_XMSNIB] = ((mouse_sensor_status.acc_x << 4) & 0xf0) | + ((mouse_sensor_status.acc_y >> 8) & 0x0f); + out_mouse_packet[NRFR_MOUSE_MOV_YMSBYTE] = mouse_sensor_status.acc_x >> 4; + mouse_sensor_status.acc_x = 0; + mouse_sensor_status.acc_y = 0; + mouse_sensor_status.sample_ready = false; + return true; + } + else + { + return false; + } +} + + +/** + * @brief Mouse sensor timer interrupt. + * + * Mouse sensor accumulator is updated and the callback + * mouse_sensor_new_sample_generated_cb() is made to the application. + */ +void MOUSE_SENSOR_TIMER_IRQ_HANDLER(void) +{ + static uint8_t sample_cnt = 0; + int32_t new_value = 0; + + if (sample_cnt < 20) + { + sample_cnt++; + } + else + { + sample_cnt = 0; + } + + if (sample_cnt < 10) + { + new_value = 2; + } + else + { + new_value = -2; + } + + mouse_sensor_status.acc_x += new_value; + mouse_sensor_status.acc_y += new_value; + mouse_sensor_status.sample_ready = true; + + MOUSE_SENSOR_TIMER->EVENTS_COMPARE[0] = 0; + + mouse_sensor_new_sample_generated_cb(); +} + + |