topic Re: uint8_t range of values in LPC Microcontrollers

uint8_t range of values

vnv — Fri, 02 Jun 2017 07:38:41 GMT

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?

Re: uint8_t range of values

converse — Fri, 02 Jun 2017 09:35:02 GMT

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

Re: uint8_t range of values

vnv — Fri, 02 Jun 2017 10:22:30 GMT

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.

Re: uint8_t range of values

converse — Fri, 02 Jun 2017 11:49:33 GMT

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