// Reads the 3 magnetometer channels and stores them in vector m
void readMag(LSM303 *compass)
{
alt_u16 xhm, xlm, yhm, ylm, zhm, zlm;
alt_u8 szBuf[5]; //need 6 values, magnetometer only refreshes data once these 6 values have been read
int Num, i;
if (I2C_MultipleRead(COMPASS_I2C_SCL_BASE, COMPASS_I2C_SDA_BASE, MAG_ADDRESS, LSM303DLHC_OUT_X_H_M , szBuf, sizeof(szBuf)))
{
Num = sizeof(szBuf)/sizeof(szBuf[0]);
for(i=0;i<Num;i++){
printf("Addr[%d] = %02xh\r\n", i, szBuf[i]);
}
xhm = szBuf[0];
xlm = szBuf[1];
zhm = szBuf[2];
zlm = szBuf[3];
yhm = szBuf[4];
ylm = szBuf[5];
}
else{
printf("Failed to read magnetometer\r\n");
}
// combine high and low bytes
compass->m.x = (alt_u16)(xhm << 8 | xlm);
compass->m.y = (alt_u16)(yhm << 8 | ylm);
compass->m.z = (alt_u16)(zhm << 8 | zlm);
}
void DEMO_EEPROM(void) {
alt_u8 szBuf[16];
int i,Num;
const alt_u8 DeviceAddr = 0xA0;
const alt_u8 ControlAddr = 00;
// set clock as output
//IOWR_ALTERA_AVALON_PIO_DIRECTION(I2C_SCL_BASE, ALTERA_AVALON_PIO_DIRECTION_OUTPUT);
IOWR(SELECT_I2C_CLK_BASE, 0, 0x01);
if (I2C_MultipleRead(I2C_SCL_BASE, I2C_SDA_BASE, DeviceAddr, ControlAddr, szBuf, sizeof(szBuf))) {
Num = sizeof(szBuf)/sizeof(szBuf[0]);
for(i=0; i<Num; i++) {
printf("Addr[%02d] = %02xh\r\n", i, szBuf[i]);
}
} else {
printf("Failed to access EEPROM\r\n");
}
}
bool DDR2_I2C_Read(void){
const alt_u8 DeviceAddr = 0xA0; // 1010-000x
bool bSuccess;
int i;
#if 1
alt_u8 szData[256];
bSuccess = I2C_MultipleRead(DDR2_I2C_SCL_BASE, DDR2_I2C_SDA_BASE, DeviceAddr, szData, sizeof(szData));
if (bSuccess){
for(i=0;i<256 && bSuccess;i++){
printf("EEPROM[%03d]=%02Xh ", i, szData[i]);
//
if (i == 0)
printf("(Number of SPD Bytes Used)\n");
else if (i == 1)
printf("(Total Number of Bytes in SPD Device, Log2(N))\n");
else if (i == 2)
printf("(Basic Memory Type[08h:DDR2])\n");
else if (i == 3)
printf("(Number of Row Addresses on Assembly)\n");
else if (i == 4)
printf("(Number of Column Addresses on Assembly)\n");
else if (i == 5)
printf("(DIMM Height and Module Rank Number[b2b1b0+1])\n");
else if (i == 6)
printf("(Module Data Width)\n");
else if (i == 7)
printf("(Module Data Width, Continued)\n");
else if (i == 16)
printf("(Burst Lengths Supported[bitmap: x x x x 8 4 x x])\n");
else if (i == 13)
printf("(Primary SDRAM width)\n");
else if (i == 14)
printf("(ECC SDRAM width)\n");
else if (i == 17)
printf("(Banks per SDRAM device)\n");
else if (i == 18)
printf("(CAS lantencies supported[bitmap: x x 5 4 3 2 x x])\n");
else if (i == 20)
printf("(DIMM Type: x x Mini-UDIMM Mini-RDIMM Micro-DIMM SO-DIMM UDIMMM RDIMM)\n");
else if (i == 22)
printf("(Memory Chip feature bitmap)\n");
else if (i == 27)
printf("(Minimun row precharge time[tRP;nsx4])\n");
else if (i == 28)
printf("(Minimun row active-row activce delay[tRRD;nsx4])\n");
else if (i == 29)
printf("(Minimun RAS to CAS delay[tRCD;nsx4])\n");
else if (i == 30)
printf("(Minimun acive to precharge time[tRAS;ns])\n");
else if (i == 31)
printf("(Size of each rank[bitmap:512MB,256MB,128MB,16GB,8GB,4GB,2GB,1GB)\n");
else if (i == 36)
printf("(Minimun write receovery time[tWR;nsx4])\n");
else if (i == 37)
printf("(Internal write to read command delay[tWTR;nsx4])\n");
else if (i == 38)
printf("(Internal read to precharge command delay[tRTP;nsx4])\n");
else if (i == 41)
printf("(Minimun activce to active/refresh time[tRC;ns])\n");
else if (i == 42)
printf("(Minimun refresh to active/refresh time[tRFC;ns])\n");
else if (i == 62)
printf("(SPD Revision)\n");
else if (i == 63)
printf("(Checksum)\n");
else if (i == 64)
printf("(64~71: Manufacturer JEDEC ID)\n");
else if (i == 72)
printf("(Module manufacturing location[Vendor-specific code])\n");
else if (i == 73)
printf("(73~90: Moduloe part number)\n");
else if (i == 91)
printf("(91~92: Moduloe revision code)\n");
else if (i == 93)
printf("(Manufacture Years since 2000[0-255])\n");
else if (i == 94)
printf("(Manufacture Weeks[1-52])\n");
else if (i == 95)
printf("(95~98[4-bytes]: Module serial number)\n");
else if (i == 99)
printf("(99~128: Manufacturer-specific data)\n");
else
printf("\n");
}
}else{
printf("Failed to read EEPROM\n");
}
#else
alt_u8 ControlAddr, Value;
printf("DDR2 EEPROM Dump\n");
bSuccess = TRUE;
usleep(20*1000);
for(i=0;i<256 && bSuccess;i++){
ControlAddr = i;
bSuccess = I2C_Read(DDR2_I2C_SCL_BASE, DDR2_I2C_SDA_BASE, DeviceAddr, ControlAddr, &Value);
if (bSuccess){
printf("EEPROM[%03d]=%02Xh\n", ControlAddr, Value);
}else{
printf("Failed to read EEPROM\n");
}
}
#endif
// test write
if (bSuccess){
alt_u8 WriteData = 0x12, TestAddr = 128;
alt_u8 ReadData;
usleep(20*1000);
bSuccess = I2C_Write(DDR2_I2C_SCL_BASE, DDR2_I2C_SDA_BASE, DeviceAddr, TestAddr, WriteData);
if (!bSuccess){
printf("Failed to write EEPROM\n");
}else{
bSuccess = I2C_Read(DDR2_I2C_SCL_BASE, DDR2_I2C_SDA_BASE, DeviceAddr, TestAddr, &ReadData);
if (!bSuccess){
printf("Failed to read EEPROM for verify\n");
}else{
if (ReadData != WriteData){
bSuccess = FALSE;
printf("Verify EEPROM write fail, ReadData=%02Xh, WriteData=%02Xh\n", ReadData, WriteData);
}
}
}
if (bSuccess)
printf("Success to write EEPROM\n");
else
printf("Failed to write EEPROM\n");
}
return bSuccess;
}