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if (!I2C_write(0xE6, 0x8A500000, I2C_TIMEOUT))
prog_error = true;
__delay_cycles(2000000); // delay at least 100ms for copy operation from Shadow-register to EEPROM to complete
__no_operation(); // For setting breakpoint while debugging
/* Set the EEPROM_READ bit in the DEV_CTRL register (0xEA located in RAM
* This copies the content of the EEPROM memory back into the shadow registers
*/
if (!I2C_write(0xE6, 0x40000000, I2C_TIMEOUT))
prog_error = true;
__delay_cycles(2000000); // delay at least 100ms for copy operation from EEPROM to Shadow-register to complete
__no_operation(); // For setting breakpoint while debugging
2.我已检查数据是否被读写。 但是、校验和部分存在错误。 您能帮助我更正此部分吗？
for (i = 0; i < eeprom_array_size; i++)
{
if(!I2C_read(eeprom_regmap[i][0], &(post_eeprom_write_regs[i]), I2C_TIMEOUT))
{
prog_error = true;
break;
}
if (post_eeprom_write_regs[i] != eeprom_regmap[i][1])
{
prog_error = true;
//GPIO_setOutputHighOnPin(GPIO_PORT_P6, GPIO_PIN6);
//GPIO_setOutputHighOnPin(GPIO_PORT_P1, GPIO_PIN0);
break;
}
bool I2C_write(unsigned long addr, unsigned long writedata, uint32_t timeout) {
EUSCI_B_I2C_initMasterParam param = {0};
param.selectClockSource = EUSCI_B_I2C_CLOCKSOURCE_SMCLK;
param.i2cClk = CS_getSMCLK();
param.dataRate = EUSCI_B_I2C_SET_DATA_RATE_400KBPS;
param.byteCounterThreshold = 0;
param.autoSTOPGeneration = UCASTP_0;
EUSCI_B_I2C_initMaster(EUSCI_B1_BASE, ¶m);
//Enable I2C Module to start operations
EUSCI_B_I2C_enable(EUSCI_B1_BASE);
// Construct the 24 bit control word (refer to datasheet section 7.6.2.1)
char control_word[3] = {0x10, (addr&0x00000F00)>>8, addr&0x000000FF};
/* Set slave Address */
EUSCI_B_I2C_setSlaveAddress(EUSCI_B1_BASE,
I2C_TARGET_ADDR
);
/* Set master to transmit mode */
EUSCI_B_I2C_setMode(EUSCI_B1_BASE,
EUSCI_B_I2C_TRANSMIT_MODE);
EUSCI_B_I2C_masterSendStart(EUSCI_B1_BASE);
__delay_cycles(INTER_BYTE_DELAY);
/* Send bits CW23-CW16 of the control word */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, control_word[0], timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send bits CW15-CW8 of the control word */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, control_word[1], timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send bits CW7-CW0 of the control word */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, control_word[2], timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send D7-D0 of the 32-bit data */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, writedata & 0x000000FF, timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send D15-D8 of the 32-bit data */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, (writedata & 0x0000FF00)>>8, timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send D23-D16 of the 32-bit data */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, (writedata & 0x00FF0000)>>16, timeout))
return 0;
__delay_cycles(INTER_BYTE_DELAY);
/* Send D31-D23 of the 32-bit data */
if (!EUSCI_B_I2C_masterSendMultiByteNextWithTimeout(EUSCI_B1_BASE, (writedata & 0xFF000000)>>24, timeout))
return 0;0000000
__delay_cycles(INTER_BYTE_DELAY);
EUSCI_B_I2C_masterSendMultiByteStop(EUSCI_B1_BASE);
return 1;
}
