uint8_t range of values

[vnv]

Hi,

I use the LPC11C24 development board, the use of uint8_t (unsigned char) type of array. Found it can only be in the value of 0 to 127, in fact it should be 0 to 255. The highest bit can not be used, which is why?

[converse]

Works (correctly) for me. What is your code, and how are you checking your values?

[vnv]

hi，

My screenshot is as follows:

This is a program I developed with SPI，Please take a look Tx_Buf[3] ,Tx_Buf[4], Tx_Buf[5] ,Tx_Buf[6] ,The value in memory.The highest bit can not be used.

[converse]

That is a bug in the display of your IDE, nothing wrong with the code or the values. Complain to your IDE vendor.

Here is the output in MCUXpresso