#include <util/delay.h>\r
#include <avr/wdt.h>\r
#include <avr/sleep.h>\r
-#include "USI_TWI_Master.h"\r
+#include "TWI_Master.h"\r
\r
uint16_t dig_T1;\r
int16_t dig_T2;\r
}\r
\r
void bmp280Init(void) {\r
+ I2c_StartCondition();\r
+ I2c_WriteByte(0xEC);\r
+ I2c_WriteByte(0xF4);\r
+ I2c_WriteByte(0b01010111); //2x Temp over 16x Press over Normal mode\r
+ I2c_WriteByte(0b11100000); //4s time / no IIfilter\r
+ I2c_StopCondition();\r
dig_T1=bmp280ReadShort(0x88);\r
dig_T2=bmp280ReadShort(0x8A);\r
dig_T3=bmp280ReadShort(0x8C);\r
dig_P7=bmp280ReadShort(0x9A);\r
dig_P8=bmp280ReadShort(0x9C);\r
dig_P9=bmp280ReadShort(0x9E);\r
- I2c_StartCondition();\r
- I2c_WriteByte(0xEC);\r
- I2c_WriteByte(0xF4);\r
- I2c_WriteByte(0b01010111); //2x Temp over 16x Press over Normal mode\r
- I2c_WriteByte(0b11100000); //4s time / no IIfilter\r
- I2c_StopCondition();\r
+ \r
\r
\r
}\r
\r
\r
}\r
+\r
+int32_t bmp280ReadPressure_simple() {\r
+ uint8_t msb, lsb,xlsb;\r
+ volatile int32_t data;\r
+ I2c_StartCondition();\r
+ I2c_WriteByte(0xEC);\r
+ I2c_WriteByte(0xF7);\r
+ I2c_StopCondition();\r
+ I2c_StartCondition();\r
+ I2c_WriteByte(0xED);\r
+ msb=I2c_ReadByte(ACK);\r
+ lsb=I2c_ReadByte(ACK);\r
+ xlsb=I2c_ReadByte(NO_ACK);\r
+ I2c_StopCondition();\r
+ \r
+ data = (int32_t)msb << 12;\r
+ data |= (int16_t)lsb<<4;\r
+ data|=xlsb>>4;\r
+ \r
+ return data;\r
+\r
+\r
+}\r
+#define BMP280_S32_t int32_t\r
+// Returns temperature in DegC, double precision. Output value of \9351.23\94 equals 51.23 DegC.\r
+// t_fine carries fine temperature as global value\r
+BMP280_S32_t t_fine;\r
+double bmp280_compensate_T_double(BMP280_S32_t adc_T)\r
+{\r
+ double var1, var2, T;\r
+ var1 = (((double)adc_T)/16384.0 - ((double)dig_T1)/1024.0) * ((double)dig_T2);\r
+ var2 = ((((double)adc_T)/131072.0 - ((double)dig_T1)/8192.0) *\r
+ (((double)adc_T)/131072.0 - ((double) dig_T1)/8192.0)) * ((double)dig_T3);\r
+ t_fine = (BMP280_S32_t)(var1 + var2);\r
+ T = (var1 + var2) / 5120.0;\r
+ return T;\r
+}\r
+// Returns pressure in Pa as double. Output value of \9396386.2\94 equals 96386.2 Pa = 963.862 hPa\r
+double bmp280_compensate_P_double(BMP280_S32_t adc_P)\r
+{\r
+ double var1, var2, p;\r
+ var1 = ((double)t_fine/2.0) - 64000.0;\r
+ var2 = var1 * var1 * ((double)dig_P6) / 32768.0;\r
+ var2 = var2 + var1 * ((double)dig_P5) * 2.0;\r
+ var2 = (var2/4.0)+(((double)dig_P4) * 65536.0);\r
+ var1 = (((double)dig_P3) * var1 * var1 / 524288.0 + ((double)dig_P2) * var1) / 524288.0;\r
+ var1 = (1.0 + var1 / 32768.0)*((double)dig_P1);\r
+ if (var1 == 0.0)\r
+ {\r
+ return 0; // avoid exception caused by division by zero\r
+ }\r
+ p = 1048576.0 - (double)adc_P;\r
+ p = (p - (var2 / 4096.0)) * 6250.0 / var1;\r
+ var1 = ((double)dig_P9) * p * p / 2147483648.0;\r
+ var2 = p * ((double)dig_P8) / 32768.0;\r
+ p = p + (var1 + var2 + ((double)dig_P7)) / 16.0;\r
+ return p;\r
+}\r
+\r
+void bmp280ConvertInt_df(int32_t * temperature,uint32_t *pressure,uint8_t oss) {\r
+ //bmp280Init();\r
+ double var1, var2, T;\r
+ int32_t adc_T=bmp280ReadTemp();\r
+ var1 = (((double)adc_T)/16384.0 - ((double)dig_T1)/1024.0) * ((double)dig_T2);\r
+ var2 = ((((double)adc_T)/131072.0 - ((double)dig_T1)/8192.0) *\r
+ (((double)adc_T)/131072.0 - ((double) dig_T1)/8192.0)) * ((double)dig_T3);\r
+ t_fine = (BMP280_S32_t)(var1 + var2);\r
+ T = (var1 + var2) / 5120.0;\r
+\r
+ int32_t adc_P= bmp280ReadPressure(oss);\r
+ double p;\r
+ var1 = ((double)t_fine/2.0) - 64000.0;\r
+ var2 = var1 * var1 * ((double)dig_P6) / 32768.0;\r
+ var2 = var2 + var1 * ((double)dig_P5) * 2.0;\r
+ var2 = (var2/4.0)+(((double)dig_P4) * 65536.0);\r
+ var1 = (((double)dig_P3) * var1 * var1 / 524288.0 + ((double)dig_P2) * var1) / 524288.0;\r
+ var1 = (1.0 + var1 / 32768.0)*((double)dig_P1);\r
+ if (var1 == 0.0)\r
+ {\r
+ return ; // avoid exception caused by division by zero\r
+ }\r
+ p = 1048576.0 - (double)adc_P;\r
+ p = (p - (var2 / 4096.0)) * 6250.0 / var1;\r
+ var1 = ((double)dig_P9) * p * p / 2147483648.0;\r
+ var2 = p * ((double)dig_P8) / 32768.0;\r
+ p = p + (var1 + var2 + ((double)dig_P7)) / 16.0;\r
+ *temperature=(int32_t) (T*100.0);\r
+ *pressure=(uint32_t) p;\r
+ return;\r
+}\r
+\r
+\r
+\r
void bmp280ConvertInt(int32_t * temperature,uint32_t *pressure,uint8_t oss) {\r
int32_t var1,var2,T,t_fine;\r
- \r
- \r
int32_t adc_T=bmp280ReadTemp();\r
var1 = ((((adc_T>>3) - ((int32_t)dig_T1<<1))) * ((int32_t)dig_T2)) >> 11;\r
var2 = ((((((adc_T>>4) - ((int32_t)dig_T1)) * ((adc_T>>4) - (int32_t)dig_T1))) >> 12) *((int32_t)dig_T3)) >> 14;\r
T = (t_fine * 5 + 128) >> 8;\r
*temperature=T;\r
int32_t adc_P= bmp280ReadPressure(oss);\r
- uint32_t p;\r
+ int32_t p;\r
var1 = (((int32_t)t_fine)>>1) - (int32_t)64000;\r
var2 = (((var1>>2) * (var1>>2)) >> 11 ) * ((int32_t)dig_P6);\r
var2 = var2 + ((var1*((int32_t)dig_P5))<<1);\r
var1 = (((int32_t)dig_P9) * ((int32_t)(((p>>3) * (p>>3))>>13)))>>12;\r
var2 = (((int32_t)(p>>2)) * ((int32_t)dig_P8))>>13;\r
p = (uint32_t)((int32_t)p + ((var1 + var2 + dig_P7) >> 4));\r
- *pressure=p;\r
+\r
+ *pressure=(uint32_t)(p);\r
\r
}\r
+\r
void bmp280Convert(double * temperature, double * pressure,uint8_t oss) {\r
\r
uint32_t p;\r
*pressure=p/100.0;\r
}\r
\r
- \r
- \r
+void bmp280ConvertIntP(int32_t temp256,uint32_t *pressure) {\r
+ int32_t var1,var2,t_fine;\r
+ //T = (t_fine * 5 + 128) >> 8;\r
+ t_fine=((temp256)-128)/5;\r
+ int32_t adc_P= bmp280ReadPressure_simple();\r
+ uint32_t p;\r
+ var1 = (((int32_t)t_fine)>>1) - (int32_t)64000;\r
+ var2 = (((var1>>2) * (var1>>2)) >> 11 ) * ((int32_t)dig_P6);\r
+ var2 = var2 + ((var1*((int32_t)dig_P5))<<1);\r
+ var2 = (var2>>2)+(((int32_t)dig_P4)<<16);\r
+ var1 = (((dig_P3 * (((var1>>2) * (var1>>2)) >> 13 )) >> 3) + ((((int32_t)dig_P2) * var1)>>1))>>18;\r
+ var1 =((((32768+var1))*((int32_t)dig_P1))>>15);\r
+ if (var1 == 0) {\r
+ return ; // avoid exception caused by division by zero\r
+ }\r
+ p = (((uint32_t)(((int32_t)1048576)-adc_P)-(var2>>12)))*3125;\r
+ if (p < 0x80000000){\r
+ p = (p << 1) / ((uint32_t)var1);\r
+ }else{\r
+ p = (p / (uint32_t)var1) * 2;\r
+ }\r
+ var1 = (((int32_t)dig_P9) * ((int32_t)(((p>>3) * (p>>3))>>13)))>>12;\r
+ var2 = (((int32_t)(p>>2)) * ((int32_t)dig_P8))>>13;\r
+ p = (uint32_t)((int32_t)p + ((var1 + var2 + dig_P7) >> 4));\r
+ *pressure=p;\r
\r
+} \r
+ \r
+void bmp280ConvertIntP1(uint32_t *pressure) {\r
+ int32_t var1,var2,t_fine;\r
+ \r
\r
+ int32_t adc_T=bmp280ReadTemp();\r
+ var1 = ((((adc_T>>3) - ((int32_t)dig_T1<<1))) * ((int32_t)dig_T2)) >> 11;\r
+ var2 = ((((((adc_T>>4) - ((int32_t)dig_T1)) * ((adc_T>>4) - (int32_t)dig_T1))) >> 12) *((int32_t)dig_T3)) >> 14;\r
+ t_fine = var1 + var2;\r
+ //T = (t_fine * 5 + 128) >> 8;\r
+ int32_t adc_P= bmp280ReadPressure_simple();\r
+ uint32_t p;\r
+ var1 = (((int32_t)t_fine)>>1) - (int32_t)64000;\r
+ var2 = (((var1>>2) * (var1>>2)) >> 11 ) * ((int32_t)dig_P6);\r
+ var2 = var2 + ((var1*((int32_t)dig_P5))<<1);\r
+ var2 = (var2>>2)+(((int32_t)dig_P4)<<16);\r
+ var1 = (((dig_P3 * (((var1>>2) * (var1>>2)) >> 13 )) >> 3) + ((((int32_t)dig_P2) * var1)>>1))>>18;\r
+ var1 =((((32768+var1))*((int32_t)dig_P1))>>15);\r
+ if (var1 == 0) {\r
+ return ; // avoid exception caused by division by zero\r
+ }\r
+ p = (((uint32_t)(((int32_t)1048576)-adc_P)-(var2>>12)))*3125;\r
+ if (p < 0x80000000){\r
+ p = (p << 1) / ((uint32_t)var1);\r
+ }else{\r
+ p = (p / (uint32_t)var1) * 2;\r
+ }\r
+ var1 = (((int32_t)dig_P9) * ((int32_t)(((p>>3) * (p>>3))>>13)))>>12;\r
+ var2 = (((int32_t)(p>>2)) * ((int32_t)dig_P8))>>13;\r
+ p = (uint32_t)((int32_t)p + ((var1 + var2 + dig_P7) >> 4));\r
+ *pressure=p;\r
+\r
+}\r
tm3d / owSlave2.git / blobdiff