HAL_I2C_Master_Transmit() ''too few arguments''

[Takayoshi Ishii]

Posted on July 18, 2017 at 05:08

Hello, I'm new with STM32 and this is the first time for using I2C on STM32.

My environment is Keil5+cubeMX4.22.

I can make the config by cube and I wrote following code, but couldn't compile it.

uint8_t c[5] ={'a', 'b', 'c', 'd', 'e'};

HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000);

Build Output said 'too few arguments' but I think the function has just four arguments, that as I wrote.

All error output is like this,

*** Using Compiler 'V5.06 update 5 (build 528)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'

Build target 'moxom_a1'compiling main.c...../Src/main.c(102): error: #165: too few arguments in function call HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000); ../Src/main.c(102): error: #18: expected a ')' HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000); ../Src/main.c(100): warning: #177-D: variable 'c' was declared but never referenced uint8_t c[5] ={'a', 'b', 'c', 'd', 'e'};../Src/main.c: 1 warning, 2 errors'moxom_a1\moxom_a1.axf' - 2 Error(s), 1 Warning(s).Target not created.Build Time Elapsed: 00:00:01

[Takayoshi Ishii · Accepted solution]

Posted on July 18, 2017 at 05:22

I solved it.

The function can't recognize '0b' well I think.

I changed,

(uint16_t)0b00111110<<1,

to

(uint16_t)0x3E<<1,

then I could compile it.

Thank you.