38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
// Copyright (c) 2018 Cirque Corp. Restrictions apply. See: www.cirque.com/sw-license
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#include "cirque_pinnacle.h"
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#include "i2c_master.h"
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#include "stdio.h"
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// Masks for Cirque Register Access Protocol (RAP)
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#define WRITE_MASK 0x80
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#define READ_MASK 0xA0
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extern bool touchpad_init;
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/* RAP Functions */
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// Reads <count> Pinnacle registers starting at <address>
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void RAP_ReadBytes(uint8_t address, uint8_t* data, uint8_t count) {
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uint8_t cmdByte = READ_MASK | address; // Form the READ command byte
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if (touchpad_init) {
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i2c_writeReg(CIRQUE_PINNACLE_ADDR << 1, cmdByte, NULL, 0, CIRQUE_PINNACLE_TIMEOUT);
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if (i2c_readReg(CIRQUE_PINNACLE_ADDR << 1, cmdByte, data, count, CIRQUE_PINNACLE_TIMEOUT) != I2C_STATUS_SUCCESS) {
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pd_dprintf("error cirque_pinnacle i2c_readReg\n");
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touchpad_init = false;
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}
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i2c_stop();
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}
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}
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// Writes single-byte <data> to <address>
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void RAP_Write(uint8_t address, uint8_t data) {
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uint8_t cmdByte = WRITE_MASK | address; // Form the WRITE command byte
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if (touchpad_init) {
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if (i2c_writeReg(CIRQUE_PINNACLE_ADDR << 1, cmdByte, &data, sizeof(data), CIRQUE_PINNACLE_TIMEOUT) != I2C_STATUS_SUCCESS) {
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pd_dprintf("error cirque_pinnacle i2c_writeReg\n");
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touchpad_init = false;
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}
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i2c_stop();
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}
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}
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