Manometer 2 click carries the MS5525DSO-SB001GS digital pressure sensor, based on leading MEMS technology. The click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over I2C or SPI interface.

MS5525DSO-SB001GS features

The MS5525DSO-SB001GS is a new generation of Digital Small Outline pressure sensors with SPI and I2C bus interface designed for high volume OEM users.

The sensor module includes a pressure sensor and an ultra-low power 24-bit ?S ADC with internal factory calibrated coefficients. It provides a 24-bit digital pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption.

The MS5525DSO-SB001GS consists of a piezo-resistive sensor and a sensor interface IC. The main function of the MS5525DSO-SB001GS is to convert the uncompensated analog output voltage from the piezo-resistive pressure sensor to a 24-bit digital value, as well as providing a 24-bit digital value for the temperature of the sensor.

How it works

Manometer 2 click measures absolute pressure of 1PSI max, trough the barbed port.

You can choose between SPI and I2C communication.

Specifications

Pinout diagram

This table shows how the pinout on Manometer 2 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
	NC	2	RST	INT	15	NC
Chip Select	CS	3	CS	TX	14	NC
SPI Clock	SCK	4	SCK	RX	13	NC
SPI Master Input Slave Output	MISO	5	MISO	SCL	12	SCL	I2C Clock
SPI Master Output Slave Input	MOSI	6	MOSI	SDA	11	SDA	I2C Data
Power supply	+3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Jumpers and settings

Programming

Code examples for Manometer 2 click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet shows the Manometer 2 click example, which takes care of initializing peripherals and the device, and then outputs the current pressure and temperature every 2 seconds.

01 void systemInit()
02 {
03     UART1_Init(9600);
04     Delay_ms(100);
05     UART1_Write_Text("nrInitialization...nr");
06     I2C1_Init_Advanced(100000, &_GPIO_MODULE_I2C1_PB67);
07     Delay_ms(100);
08     MMETER2_initDriver(pp001GS ,I2CAddress, I2C1_Start, I2C1_Write, I2C1_Read);
09 
10 }
11 
12 void main()
13 {
14     char uartText [60];
15     float measureResult;
16     systemInit();
17     UART1_Write_Text("Initializednr");
18 
19    while( 1 )
20     {
21         measureResult = MMETER2_getTemperature(CONVERT_4096);
22         sprintf(uartText, "Temperature is: %3.3f Celsiusrn", measureResult);
23         UART1_Write_Text(uartText);
24 
25        measureResult = MMETER2_getPressure(CONVERT_4096);
26         sprintf(uartText, "Pressure is:    %3.3f PSIrnrn", measureResult);
27         UART1_Write_Text(uartText);
28 
29        Delay_ms( 2000 );
30     }
31     
32 }