SSLM1
/
BME680_failure
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Dependencies: mbed
Revision 0:84c0a170d0c0, committed 2020-05-17
- Comitter:
- sasakisho
- Date:
- Sun May 17 00:58:51 2020 +0000
- Commit message:
- version0
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun May 17 00:58:51 2020 +0000
@@ -0,0 +1,62 @@
+#include "mbed.h"
+
+Serial pc (USBTX, USBRX);
+I2C i2c(p9, p10);
+
+//BME680 Slave address
+#define ADDR_BME 0xED
+
+//LPS331AP registers
+#define BME_WHO 0xD0
+#define BME_SET1 0x74
+#define BME_SET2 0x72
+#define BME_P_LL 0x21
+#define BME_P_L 0x20
+#define BME_P_H 0x1F
+
+char cmd[2];
+
+void i2c_write(char addr, char regist, char data)
+{
+ cmd[0] = regist;
+ cmd[0] = data;
+ i2c.write(addr, cmd, 2);
+}
+
+char i2c_read(char addr, char regist)
+{
+ cmd[0] = regist;
+ i2c.write(addr, cmd, 1);
+ i2c.read(addr, cmd, 1);
+ return cmd[0];
+}
+
+int main()
+{
+ unsigned long ID, H, L, XL;
+ char id[2], data[3];
+ double P;
+
+ ID = i2c_read(ADDR_BME, BME_WHO);
+ pc.printf("ID = 0x%x\n", ID);
+
+ while(1)
+ {
+ i2c_write(ADDR_BME, BME_SET1, 0x07);
+ wait(0.5);
+ i2c_write(ADDR_BME, BME_SET2, 0x00);
+
+ H = i2c_read(ADDR_BME, BME_P_H);
+
+ L = i2c_read(ADDR_BME, BME_P_L);
+
+ XL = i2c_read(ADDR_BME, BME_P_LL);
+
+ P = (H << 8) | (L << 8) | XL;
+ pc.printf("P = %lf\n", P);
+
+ wait(1.0);
+
+ }
+
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun May 17 00:58:51 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file