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#include "trackpad.h"
// bool isScrollingMode = false;
bool isScrollMode = false;
void pointing_device_init(void){
SPI_Init(SPI_SPEED_FCPU_DIV_8 | SPI_MODE_MASTER);
// Set as output
TP_RESET_INIT;
TP_SHUTDOWN_INIT;
TP_CS_INIT;
LVL_SHIFT_EN_INIT;
// Reset level shifter
LVL_SHIFT_EN_LO;
wait_ms(100);
LVL_SHIFT_EN_HI;
// Force a BB-8520 reset
TP_RESET_HI;
wait_ms(100);
TP_RESET_LO;
// Turn on BB-8520 trackpad
TP_SHUTDOWN_LO;
TP_CS_HI;
}
uint8_t readRegister(uint8_t address) {
uint8_t data;
TP_CS_LO;
// Read the data
SPI_TransferByte(address);
data = SPI_TransferByte(0x00);
TP_CS_HI;
return data;
}
bool pointing_device_task(void){
uint8_t motion = readRegister(0x02);
// Motion has occurred on the trackpad
if (motion > 127) {
int8_t dx, dy;
if(TRACKPAD_CONNECTOR_VER == 1) {
dx = readRegister(0x03);
dy = -readRegister(0x04);
}
else {
dy = -readRegister(0x03);
dx = -readRegister(0x04);
}
report_mouse_t currentReport = pointing_device_get_report();
if (isScrollMode)
{
currentReport.h = dx/SCROLL_SPEED_DIVIDER;
currentReport.v = dy/SCROLL_SPEED_DIVIDER;
}
else
{
currentReport.x = dx * POINTER_SPEED_MULTIPLIER;
currentReport.y = dy * POINTER_SPEED_MULTIPLIER;
}
pointing_device_set_report(currentReport);
}
return pointing_device_send();
}
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