![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Minor fixes
Dependencies: LSM9DS1_Library SDFileSystem mbed nrf51_rtc
Fork of LSM303DLHTest by
Diff: main.cpp
- Revision:
- 0:750784997b84
- Child:
- 1:14b97953bd2f
diff -r 000000000000 -r 750784997b84 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sun Nov 28 13:29:02 2010 +0000 @@ -0,0 +1,111 @@ + +/* + * LSM303DLH Test program + * @tosihisa + */ + +#include "mbed.h" +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +Serial debug(USBTX,USBRX); + +I2C LSM303DLH(p28, p27); + +const int addr_acc = 0x30; +const int addr_mag = 0x3c; + +enum REG_ADDRS { + /* --- Mag --- */ + CRA_REG_M = 0x00, + CRB_REG_M = 0x01, + MR_REG_M = 0x02, + OUT_X_M = 0x03, + OUT_Y_M = 0x05, + OUT_Z_M = 0x07, + /* --- Acc --- */ + CTRL_REG1_A = 0x20, + OUT_X_A = 0x28, + OUT_Y_A = 0x2A, + OUT_Z_A = 0x2C, +}; + +bool write_reg(int addr_i2c,int addr_reg, char v) +{ + char data[2] = {addr_reg, v}; + return LSM303DLH.write(addr_i2c, data, 2) == 0; +} + +bool read_reg(int addr_i2c,int addr_reg, char *v) +{ + char data = addr_reg; + if ((LSM303DLH.write(addr_i2c, &data, 1) == 0) && (LSM303DLH.read(addr_i2c, &data, 1) == 0)){ + *v = data; + return true; + } + return false; +} + +bool read_reg_short(int addr_i2c,int addr_reg, short *v) +{ + char *pv = (char *)v; + read_reg(addr_i2c,addr_reg+0,pv+0); + return read_reg(addr_i2c,addr_reg+1,pv+1); +} + +int main() { + char reg_v; + bool result; + short a_x,a_y,a_z; + short m_x,m_y,m_z; + double m_deg; + + debug.format(8,Serial::None,1); + debug.baud(115200); + debug.printf("LSM303DLH Test\x0d\x0a"); + + reg_v = 0; + result = read_reg(addr_acc,CTRL_REG1_A,®_v); + debug.printf("(%s) CTRL_REG1_A=[0x%02X]\x0d\x0a",(result) ? "OK" : "NG",reg_v); + + reg_v = 0; + result = read_reg(addr_mag,CRA_REG_M,®_v); + debug.printf("(%s) CRA_REG_M=[0x%02X]\x0d\x0a",(result) ? "OK" : "NG",reg_v); + + reg_v = 0; + reg_v |= 0x01 << 5; /* Normal mode */ + reg_v |= 0x07; /* X/Y/Z axis enable. */ + result = write_reg(addr_acc,CTRL_REG1_A,reg_v); + reg_v = 0; + result = read_reg(addr_acc,CTRL_REG1_A,®_v); + debug.printf("(%s) CTRL_REG1_A=[0x%02X]\x0d\x0a",(result) ? "OK" : "NG",reg_v); + + reg_v = 0; + reg_v |= 0x04 << 2; /* Minimum data output rate = 15Hz */ + result = write_reg(addr_mag,CRA_REG_M,reg_v); + + reg_v = 0; + reg_v |= 0x01 << 5; /* +-1.3Gauss */ + result = write_reg(addr_mag,CRB_REG_M,reg_v); + + reg_v = 0; /* Continuous-conversion mode */ + result = write_reg(addr_mag,MR_REG_M,reg_v); + + while(1) { + read_reg_short(addr_acc,OUT_X_A,&a_x); + read_reg_short(addr_acc,OUT_Y_A,&a_y); + read_reg_short(addr_acc,OUT_Z_A,&a_z); + read_reg_short(addr_mag,OUT_X_M,&m_x); + read_reg_short(addr_mag,OUT_Y_M,&m_y); + read_reg_short(addr_mag,OUT_Z_M,&m_z); + m_deg = (atan2((double)m_x,(double)m_y) * 180) / M_PI; + if(m_deg < 0){ + m_deg += 360.0; + } + + debug.printf("ACC:X=%-7d,Y=%-7d,Z=%-7d ",a_x,a_y,a_z); + debug.printf("MAG:X=%-7d,Y=%-7d,Z=%-7d DEG=%f\x0d\x0a",m_x,m_y,m_z,m_deg); + wait(0.1); + } +}