Revision 0:620064decfb0, committed 2018-10-14

Comitter:

giovanniwsn

Date:

Sun Oct 14 03:29:55 2018 +0000

Commit message:

LPS_25H_capada, to reduce code size

Changed in this revision

diff -r 000000000000 -r 620064decfb0 LPS25H/LPS25H.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPS25H/LPS25H.cpp	Sun Oct 14 03:29:55 2018 +0000
@@ -0,0 +1,61 @@
+/*
+ * mbed library program
+ *  LPS25H MEMS pressure sensor: 260-1260 hPa absolute digital output barometer
+ *   made by STMicroelectronics
+ *   http://www.st-japan.co.jp/web/catalog/sense_power/FM89/SC1316/PF255230
+ * Copyright (c) 2015,'17 Kenji Arai / JH1PJL
+ *      Created: Feburary  21st, 2015
+ *      Revised: August    21st, 2017
+ */
+
+#include "LPS25H.h"
+
+LPS25H::LPS25H (PinName p_sda, PinName p_scl) :
+ _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p)
+{
+    LPS25H_addr = LPS25H_V_CHIP_ADDR;
+    //LPS25H_mode = FIFO_HW_FILTER;
+    init();
+}
+// Initialize
+void LPS25H::init(void) {
+    _i2c.frequency(100000);
+    //if (LPS25H_mode == FIFO_HW_FILTER){
+        dt[0] = LPS25H_RES_CONF;
+        dt[1] = 0x05;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+        dt[0] = LPS25H_FIFO_CTRL;
+        dt[1] = 0xdf;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+        dt[0] = LPS25H_CTRL_REG2;
+        dt[1] = 0x40;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+        dt[0] = LPS25H_CTRL_REG1;
+        dt[1] = 0x90;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+    /*} else {
+        dt[0] = LPS25H_CTRL_REG2;
+        dt[1] = 0x0;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+        dt[0] = LPS25H_CTRL_REG1;
+        dt[1] = CR_STD_SET;
+        _i2c.write(LPS25H_addr, dt, 2, false);
+    }*/
+}
+
+// Start conv. and get all data
+void LPS25H::get(void) {
+    dt[0] = LPS25H_PRESS_POUT_XL | 0x80;
+    _i2c.write(LPS25H_addr, dt, 1, true);
+    _i2c.read(LPS25H_addr, dt, 3, false);
+    press = dt[2] << 16 | dt[1] << 8 | dt[0];
+    alt = (1-pow((press/4096)/1013.25,0.190284))*145366.45;
+}
+
+float LPS25H::pressure() {
+    return (float)press / 4096;
+}
+
+float LPS25H::altitude(void) {
+    return  alt/3.280839895;
+}

diff -r 000000000000 -r 620064decfb0 LPS25H/LPS25H.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPS25H/LPS25H.h	Sun Oct 14 03:29:55 2018 +0000
@@ -0,0 +1,58 @@
+/*
+ * mbed library program
+ *  LPS25H MEMS pressure sensor: 260-1260 hPa absolute digital output barometer
+ *   made by STMicroelectronics
+ *   http://www.st-japan.co.jp/web/catalog/sense_power/FM89/SC1316/PF255230
+ * Copyright (c) 2015,'17 Kenji Arai / JH1PJL
+ *      Created: Feburary  21st, 2015
+ *      Revised: August    21st, 2017
+ */
+
+#ifndef LPS25H_H
+#define LPS25H_H
+
+#include "mbed.h"
+
+//  LPS25H Address
+//  7bit address = 0b101110x(0x5c or 0x5d depends on SA0/SDO)
+#define LPS25H_G_CHIP_ADDR  (0x5c << 1)    // SA0(=SDO pin) = Ground
+#define LPS25H_V_CHIP_ADDR  (0x5d << 1)    // SA0(=SDO pin) = Vdd
+
+// MODE Selection
+#define FIFO_HW_FILTER          1
+#define FIFO_BYPASS             0
+
+//  Register's definition
+#define LPS25H_RES_CONF        0x10
+#define LPS25H_CTRL_REG1       0x20
+#define LPS25H_CTRL_REG2       0x21
+#define LPS25H_PRESS_POUT_XL   0x28
+#define LPS25H_FIFO_CTRL       0x2e
+
+// Control Reg.
+#define CR_STD_SET      ( (1UL << 7) + (1UL << 4) + (1UL << 2) )
+
+class LPS25H
+{
+public:
+    LPS25H(PinName p_sda, PinName p_scl);
+    void get(void);                 // Start convertion & data save
+    float pressure(void);           // Read pressure data
+    float altitude(void);                       // Read altitude data; return altitude in
+
+protected:
+    I2C *_i2c_p;
+    I2C &_i2c;
+    void init(void);
+
+private:
+    char dt[6];            // working buffer
+    uint8_t LPS25H_addr;   // Sensor address
+    //uint8_t LPS25H_id;     // ID
+    uint8_t LPS25H_ready;  // Device is on I2C line = 1, not = 0
+    uint8_t LPS25H_mode;   // Operation mode
+    uint32_t press;        // pressure raw data
+    int32_t alt;
+};
+
+#endif      // LPS25H_H

diff -r 000000000000 -r 620064decfb0 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Oct 14 03:29:55 2018 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+#include "LPS25H.h"
+
+Serial  pc(USBTX, USBRX);// Serial Debug.
+
+DigitalOut myled(LED1);
+LPS25H baro(p28, p27);
+
+int main() {
+    float alt, Bpress;
+    
+    
+    while(1) {
+        
+        baro.get();
+        Bpress = baro.pressure();
+        alt = baro.altitude();
+        
+        pc.printf("pre: %.3f   alt: %.3f\n", Bpress, alt);
+        
+        myled = 1;
+        wait(0.5);
+        myled = 0;
+        wait(0.5);
+    }
+}

diff -r 000000000000 -r 620064decfb0 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Oct 14 03:29:55 2018 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/e95d10626187
\ No newline at end of file