| 6,10 → 6,12 |
|---|
| * Writes the given byte to the register at the address |
| */ |
| void WriteSPI(unsigned char addr, unsigned char data) { |
| halSPISetPolarityPhase(1,1); // ADXL345 operates in SPI(1,1) |
| ADXL_CS_LOW(); |
| spiSendByte(addr & ~ADXL_BYTE_WRITE); |
| spiSendByte(data); |
| ADXL_CS_HIGH(); |
| halSPISetPolarityPhase(0,0); // Revert back to SPI(0,0) |
| } |
| |
| /* |
| 17,10 → 19,12 |
|---|
| */ |
| unsigned char ReadSPI(unsigned char addr) { |
| unsigned char ret; |
| halSPISetPolarityPhase(1,1); // ADXL345 operates in SPI(1,1) |
| ADXL_CS_LOW(); |
| spiSendByte(addr | ADXL_BYTE_READ); |
| spiReadFrame(&ret, 1); |
| ADXL_CS_HIGH(); |
| halSPISetPolarityPhase(0,0); // Revert back to SPI(0,0) |
| return ret; |
| } |
| |
| 30,10 → 34,12 |
|---|
| int Read16SPI(unsigned char addr) { |
| unsigned char recv[2]; |
| int ret; |
| halSPISetPolarityPhase(1,1); // ADXL345 operates in SPI(1,1) |
| ADXL_CS_LOW(); |
| spiSendByte(addr | ADXL_MULTI_BYTE_READ); |
| spiReadFrame(recv, 2); |
| ADXL_CS_HIGH(); |
| halSPISetPolarityPhase(0,0); // Revert back to SPI(0,0) |
| ret = recv[0]; |
| ret |= recv[1] << 8; |
| return ret; |
| 82,7 → 88,7 |
|---|
| */ |
| void ADXLInitInterrupts(void) { |
| // Set tap acceleration threshold (62.5mg/LSB, 0xFF=16g) |
| WriteSPI(ADXL345_REG_THRESH_TAP, 0x20); |
| WriteSPI(ADXL345_REG_THRESH_TAP, 0x18); |
| |
| // Set maximum tap duration (625us/LSB) |
| WriteSPI(ADXL345_REG_DUR, 0xFF); |
| 107,6 → 113,7 |
|---|
| * Clears any active interrupt flags |
| */ |
| void ADXLClearInterrupts(void) { |
| ReadSPI(ADXL345_REG_ACT_TAP_STATUS); |
| ReadSPI(ADXL345_REG_INT_SOURCE); |
| } |
| |