Optimize initialization of PMW3360 Sensor (#15821)
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2 changed files with 12 additions and 7 deletions
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@ -144,13 +144,14 @@ The PMW 3360 is an SPI driven optical sensor, that uses a built in IR LED for su
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| Setting | Description | Default |
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|-----------------------------|--------------------------------------------------------------------------------------------|---------------|
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|`PMW3360_CS_PIN` | (Required) Sets the Cable Select pin connected to the sensor. | _not defined_ |
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|`PMW3360_CLOCK_SPEED` | (Optional) Sets the clock speed that the sensor runs at. | `2000000` |
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|`PMW3360_SPI_LSBFIRST` | (Optional) Sets the Least/Most Significant Byte First setting for SPI. | `false` |
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|`PMW3360_SPI_MODE` | (Optional) Sets the SPI Mode for the sensor. | `3` |
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|`PMW3360_SPI_DIVISOR` | (Optional) Sets the SPI Divisor used for SPI communication. | _varies_ |
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|`PMW3360_LIFTOFF_DISTANCE` | (Optional) Sets the lift off distance at run time | `0x02` |
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|`ROTATIONAL_TRANSFORM_ANGLE` | (Optional) Allows for the sensor data to be rotated +/- 30 degrees directly in the sensor. | `0` |
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|`PMW3360_CS_PIN` | (Required) Sets the Cable Select pin connected to the sensor. | _not defined_ |
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|`PMW3360_CLOCK_SPEED` | (Optional) Sets the clock speed that the sensor runs at. | `2000000` |
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|`PMW3360_SPI_LSBFIRST` | (Optional) Sets the Least/Most Significant Byte First setting for SPI. | `false` |
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|`PMW3360_SPI_MODE` | (Optional) Sets the SPI Mode for the sensor. | `3` |
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|`PMW3360_SPI_DIVISOR` | (Optional) Sets the SPI Divisor used for SPI communication. | _varies_ |
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|`PMW3360_LIFTOFF_DISTANCE` | (Optional) Sets the lift off distance at run time | `0x02` |
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|`ROTATIONAL_TRANSFORM_ANGLE` | (Optional) Allows for the sensor data to be rotated +/- 127 degrees directly in the sensor. | `0` |
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|`PMW3360_LEGACY_FIRMWARE_UPLOAD` | (Optional) Switches to older, manual upload of firmware, for compatibility. | _not defined_ |
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The CPI range is 100-12000, in increments of 100. Defaults to 1600 CPI.
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@ -209,12 +209,16 @@ void pmw3360_upload_firmware(void) {
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spi_write(REG_SROM_Load_Burst | 0x80);
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wait_us(15);
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#ifdef PMW3360_LEGACY_FIRMWARE_UPLOAD
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unsigned char c;
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for (int i = 0; i < FIRMWARE_LENGTH; i++) {
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c = (unsigned char)pgm_read_byte(firmware_data + i);
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spi_write(c);
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wait_us(15);
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}
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#else
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spi_transmit(firmware_data, sizeof(firmware_data));
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#endif
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wait_us(200);
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pmw3360_read(REG_SROM_ID);
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