diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/synaptics_touchpad/synaptics_touchpad.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/synaptics_touchpad/synaptics_touchpad.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/synaptics_touchpad/synaptics_touchpad.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/synaptics_touchpad/synaptics_touchpad.c new file mode 100644 index 0000000..53294ad --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/synaptics_touchpad/synaptics_touchpad.c @@ -0,0 +1,142 @@ +/** + * Copyright (c) 2009 - 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. + * + */ +#include <stdbool.h> +#include <stdint.h> + +#include "twi_master.h" +#include "synaptics_touchpad.h" + +/*lint ++flb "Enter library region" */ + +#define PRODUCT_ID_BYTES 10U //!< Number of bytes to expect to be in product ID + +static uint8_t m_device_address; // !< Device address in bits [7:1] +static const uint8_t expected_product_id[PRODUCT_ID_BYTES] = {'T', 'M', '1', '9', '4', '4', '-', '0', '0', '2'}; //!< Product ID expected to get from product ID query + +bool touchpad_init(uint8_t device_address) +{ + bool transfer_succeeded = true; + + m_device_address = (uint8_t)(device_address << 1); + + // Do a soft reset + uint8_t reset_command = 0x01; + transfer_succeeded &= touchpad_write_register(TOUCHPAD_RESET, reset_command); + + // Page select 0 + uint8_t page_to_select = 0x00; + transfer_succeeded &= touchpad_write_register(TOUCHPAD_PAGESELECT, page_to_select); + + // Read and verify product ID + transfer_succeeded &= touchpad_product_id_verify(); + + return transfer_succeeded; +} + + +bool touchpad_product_id_verify(void) +{ + bool transfer_succeeded = true; + uint8_t product_id[PRODUCT_ID_BYTES]; + transfer_succeeded &= touchpad_product_id_read(product_id, PRODUCT_ID_BYTES); + + for (uint8_t i = 0; i < 10; i++) + { + if (product_id[i] != expected_product_id[i]) + { + transfer_succeeded = false; + } + } + + return transfer_succeeded; +} + +bool touchpad_reset(void) +{ + uint8_t w2_data[2] = {TOUCHPAD_COMMAND, 0x01}; + + return twi_master_transfer(m_device_address, w2_data, 2, TWI_ISSUE_STOP); +} + +bool touchpad_interrupt_status_read(uint8_t *interrupt_status) +{ + return touchpad_read_register(TOUCHPAD_INT_STATUS, interrupt_status); +} + +bool touchpad_set_sleep_mode(TouchpadSleepMode_t mode) +{ + return touchpad_write_register(TOUCHPAD_CONTROL, (uint8_t)mode); +} + +bool touchpad_read_register(uint8_t register_address, uint8_t *value) +{ + bool transfer_succeeded = true; + transfer_succeeded &= twi_master_transfer(m_device_address, ®ister_address, 1, TWI_DONT_ISSUE_STOP); + if (transfer_succeeded) + { + transfer_succeeded &= twi_master_transfer(m_device_address | TWI_READ_BIT, value, 1, TWI_ISSUE_STOP); + } + return transfer_succeeded; +} + +bool touchpad_write_register(uint8_t register_address, const uint8_t value) +{ + uint8_t w2_data[2]; + + w2_data[0] = register_address; + w2_data[1] = value; + return twi_master_transfer(m_device_address, w2_data, 2, TWI_ISSUE_STOP); +} + +bool touchpad_product_id_read(uint8_t * product_id, uint8_t product_id_bytes) +{ + uint8_t w2_data[1]; + bool transfer_succeeded = true; + + w2_data[0] = TOUCHPAD_PRODUCT_ID; + transfer_succeeded &= twi_master_transfer(m_device_address, w2_data, 1, TWI_DONT_ISSUE_STOP); + if (transfer_succeeded) + { + transfer_succeeded &= twi_master_transfer(m_device_address | TWI_READ_BIT, product_id, product_id_bytes, TWI_ISSUE_STOP); + } + return transfer_succeeded; +} + +/*lint --flb "Leave library region" */ |