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- Product Code: MIKROE-1938
- MPN: MIKROE-1938
In combination with the correct library, the magnetic flux density of a small magnet (diametral magnetisation) rotating above the IC can be measured in a non-contacting way.
The sensor enables the design of novel generation of non-contacting rotary position sensors that are frequently required for both automotive and industrial applications.
Magneto 2 click communicates with the target MCU through the mikroBUS™ SPI bus. The board is designed to use a 5V power supply only.
Specification
Type | Motion |
Applications | Absolute Rotary Position Sensor, Pedal Position Sensor, Float-Level sensor, and Throttle Position Sensor |
On-board modules | Melexis's MLX90316 monolithic rotary position sensor |
Key Features | Triaxis® Hall Technology, Programmable Angular Range up to 360 Degrees |
Key Benefits | CRC checks for even higher accuracy, Multiple filter settings for higher accuracy |
Interface | SPI |
Input Voltage | 5V,5V |
Compatibility | mikroBUS |
Click board size | S (28.6 x 25.4 mm) |
Documentation
Magneto 2 click is a mikroBUS™ add-on board with Melexis's MLX90316 monolithic rotary position sensor.
Sensing flux density with the IC surface of the MLX90316 allows the click to decode the absolute rotary (angular) position from 0 to 360 degrees.
In combination with the correct library, the magnetic flux density of a small magnet (diametral magnetisation) rotating above the IC can be measured in a non-contacting way.
Features and usage notes
- Tri⊗is® Hall Technology
- 40 bit ID number
- Single Die - SO8 or Dual Die (Full Redundant) - TSSOP16, RoHS Compliant
- Absolute Rotary Position Sensor IC
- Changeable main frequency for DSP chip (7MHz or 20 MHz master clock)
- Hysteresis Filter
- FIR and IIR filters for higher output accuracy
- Programmable Linear Transfer Characteristic
- SPI interface
- 5V Power Supply
Programming
This code initialises UART and SPI, reads data from the Magneto 2 click, and, if the readings are successful, prints it out on the UART
1 void main() { 2 char txt[20]; 3 uint8_t check = 0; 4 float angle = 0.0; 5 UART1_Init_Advanced( 9600, _UART_8_BIT_DATA, 6 _UART_NOPARITY, 7 _UART_ONE_STOPBIT, 8 &_GPIO_MODULE_USART1_PA9_10 ); 9 Delay_ms(300); 10 11 UART1_Write_Text("Uart initializedrn"); 12 GPIO_Digital_Output( &GPIOD_BASE, _GPIO_PINMASK_13 ); // set CS pin as output 13 14 // Initialize SPI 15 16 SPI3_Init_Advanced(_SPI_FPCLK_DIV64, _SPI_MASTER | 17 _SPI_8_BIT | _SPI_CLK_IDLE_LOW | 18 _SPI_SECOND_CLK_EDGE_TRANSITION | 19 _SPI_MSB_FIRST | 20 _SPI_SS_DISABLE | 21 _SPI_SSM_ENABLE | 22 _SPI_SSI_1, &_GPIO_MODULE_SPI3_PC10_11_12); 23 SPI_Set_Active(&SPI3_Read, &SPI3_Write); // Sets the SPI1 module active 24 25 26 while (1) 27 { 28 check = read_mlx(); 29 if ( check == 0) // if read was successful, print success and angle 30 { 31 Uart1_Write_Text("Success rn"); 32 angle = (float) mlx.angle; 33 angle /= 45.5; 34 floattostr(angle,txt); 35 Uart1_Write_Text(txt); 36 Uart1_Write_Text("rn"); 37 } 38 else // else print fail 39 Uart1_Write_Text("Fail rn"); 40 41 Delay_ms(400); // Wait 400ms 42 } 43 }
Code example that demonstrates the usage of Magneto 2 click with MikroElektronika hardware, written for mikroC for ARM is available on Libstock.