Dear Jpitt,

thank you for your answer, it help me a lot.
I solved this error by adding in my code (and not in stdint.h) :
-typedef uint8_t U8
-typedef uint16_t U16
With this 2 added typedef I have not compilation error for U8 and U16.

But, now, I have other errors, and I think it is again a problem of C standard version as you metioned...
Here is "typedef" of the "old C standard version" which compiler creates errors :
SBIT (SDA0_i2c_sbit, SFR_P0, 0)
SBIT (SCL0_i2c_sbit, SFR_P0, 1)
INTERRUPT(SMBUS0_ISR, SMBUS0_IRQn)
INTERRUPT(TIMER3_ISR, TIMER3_IRQn)
Do you know what can be the equivalent for the new C standard version for "SBIT" and "INTERRUPT" ?

The MCU used for this project is : C8051F380
The SDK / C compiler installer and used in this simply studio project is :
Keil 8051 v9.60.0 (previously, the project was created with version Keil V9.53)
8051 SDK v4.1.7.0 (previously, the project was created with version 8051 SDK v4.1.5)

Maybe the best way to solve this compilation error for this project is to download and configure "older" C compiler/SDK...
Do you know if it is possible to use "older" C compiler/SDK ?
Where can I download "older" C compiler/SDK ?
How can I configure simplicity studio to use these "older" C compiler/SDK ?

Regards,
Nikola

Dear Jpitt,

thank you for your answer, it help me a lot.
I solved this error by adding in my code (and not in stdint.h) :
-typedef uint8_t U8
-typedef uint16_t U16
With this 2 added typedef I have not compilation error for U8 and U16.

But, now, I have other errors, and I think it is again a problem of C standard version as you metioned...
Here is "typedef" of the "old C standard version" which compiler creates errors :
SBIT (SDA0_i2c_sbit, SFR_P0, 0)
SBIT (SCL0_i2c_sbit, SFR_P0, 1)
INTERRUPT(SMBUS0_ISR, SMBUS0_IRQn)
INTERRUPT(TIMER3_ISR, TIMER3_IRQn)
Do you know what can be the equivalent for the new C standard version for "SBIT" and "INTERRUPT" ?

The MCU used for this project is : C8051F380
The SDK / C compiler installed and used in this simply studio project is :
Keil 8051 v9.60.0 (previously, the project was created with version Keil V9.53)
8051 SDK v4.1.7.0 (previously, the project was created with version 8051 SDK v4.1.5)

Maybe the best way to solve this compilation error for this project is to download and configure "older" C compiler/SDK...
Do you know if it is possible to use "older" C compiler/SDK ?
Where can I download "older" C compiler/SDK ?
How can I configure simplicity studio to use these "older" C compiler/SDK ?

Regards,
Nikola

Dear all,

When I open a C example code (blinking) for MCU C8051F38x from simplicity studio and compile this example code I have no error and it compile correctly.

I wanted to add U8 and U16 variable in this C example code and I got error C129

I think that the compiler don't know what is U8 and U16...

But in some other C code that I created long time ago, I know that all my C code compiled with U8 and U16 var.

I will try to describe my problem with a example, I will use the blinking example C code provided by simplicity studio for MCU C8051F38x :

When I create a new blinking example C code, and, I change nothing, it compile correctly.

After, I add variable "U8 tmp = 5;" for example, I try to compile and I got compilation error.

When I replace "U8 tmp = 5;" by "uint8_t tmp = 5;", I try to compile and it compile correctly.

When I want to add for example variable "U16 tmp = 10;" I have compilation error too.

What can be the problem ?

Why U8 and U16 is an error for this C compiler ?

Is U8 and uint8_t same/equivalent ?

Regards,

Nikola