Manabu Taniguchi
/
SSCI824_I2Ctest
SSCI824 I2C Test Don't work.
http://developer.mbed.org/questions/5761/I2C-Problem/
main.cpp
- Committer:
- mark8018
- Date:
- 2014-12-28
- Revision:
- 0:56fa72db2898
File content as of revision 0:56fa72db2898:
#include "mbed.h" #if defined (TARGET_MBED_LPC1768) // Defines for sensors I2C #define SDA p9 #define SCL p10 #elif defined (TARGET_SSCI824) // Defines for sensors I2C #define SDA dp4 #define SCL dp5 #elif defined (TARGET_LPC11U35_401) // Defines for sensors I2C #define SDA P0_5 #define SCL P0_4 #else #error "Unknown target type" #endif #define I2C_ADDRES (0x1c<<1) Serial pc(USBTX, USBRX); I2C i2c(SDA, SCL); char temp[6]; int main() { pc.baud(115200); wait(1.0); memset(temp, 0, sizeof(temp)); temp[0]=0x0D; // REG_WHO_AM_I if(i2c.write(I2C_ADDRES, temp, 1, true) != 0) pc.printf("I2C write error\r\n"); memset(temp, 0, sizeof(temp)); if(i2c.read(I2C_ADDRES, temp, 1, false) != 0) pc.printf("I2C read error\r\n"); pc.printf("ID is %X\r\n",(int)temp[0]); // ID is 0x1A memset(temp, 0, sizeof(temp)); temp[0]=0x2A; // REG_CTRL_REG1 temp[1]=0x19; // Data if(i2c.write(I2C_ADDRES, temp, 2, false) != 0) pc.printf("I2C write error\r\n"); while(1) {} }