TI中文支持网你好：
我在使用cc1310的配置i2c接口，编译可以过，在下载时会出现以下错误提示：
Cortex_M3_0: Error: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.0.27.9)
Cortex_M3_0: Trouble Halting Target CPU: (Error -2064 @ 0x0) Unable to read device status. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.0.27.9)
代码如下，去掉I2C_transfer(i2c, &i2cTransaction);则不会出现上述问题。请问何解？
SDK版本：simplelink_cc13x0_sdk_2_20_00_38，工程用的是\examples\rtos\CC1310_LAUNCHXL\ti154stack\sensor_oad
I2C使用的引脚：
#define CC1350_LAUNCHXL_I2C0_SCL0 IOID_9
#define CC1350_LAUNCHXL_I2C0_SDA0 IOID_8
I2C操作如下：
I2C_Handle i2c_init(void)
{
I2C_Handle i2c;
I2C_init();
I2C_Params_init(&I2CParams);
I2CParams.bitRate = I2C_400kHz;
i2c = I2C_open(Board_I2C0, &I2CParams);
testGpioPin = PIN_open(&testGpioPinpinGpioState, testGpioPinTable);
if (testGpioPin == NULL) {
return false;
}
InterruptIntPinHandle = PIN_open(&InterruptPinState, testInterruptPinTable);
if(testInterruptPinTable == NULL) {
/* Error initializing button pins */
while(1);
}
/* Setup callback for button pins */
if (PIN_registerIntCb(testInterruptPinTable, &InterruptCallbackFxn0) != 0) {
/* Error registering button callback function */
while(1);
}
uint8_t txBuffer[2];
uint8_t rxBuffer[2];
I2C_Transaction i2cTransaction;
txBuffer[0] = reg;
txBuffer[1] = data;
i2cTransaction.slaveAddress = Board_i2c_ADDR;
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 2;
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 1;
I2C_transfer(i2c, &i2cTransaction);
}
da qin zheng sheng：
使用哪种尺寸封装？把波特率修改为100k试试。
user5020968：
回复 da qin zheng sheng:
用的是QFN48封装的，改100K试过，还是不行，我用的是TI 15.4自组网的SDK，不 知道这个是否有影响，在i2ctmp007的例程里跑是正常的。
Viki Shi：
这个报错一般是JTAG连接或者硬件问题，复位有效吗？
user5020968：
回复 Viki Shi:
你好，在开始下载程序前有一次复位，下载完成后没有复位信号。
