About HAL_UART_Receive_IT arguments

[LMI2]

Posted on August 18, 2016 at 18:33

One slip of my finger and my post was gone. I hope this is not a duplicate post.

I am receiving serial data one byte at a time. For that I need an one byte array, I think. Does it have to be an array? One byte array is not much of an array. This works: ''

volatile
uint8_t pufkuri[1];''

How to use something else than an array? I have gotten warnings and latest test gave this:''#142: expression must have pointer-to-object type'' My test program works, so this is not any kind of emergency, but I would like to relearn some C.

/* Includes ------------------------------------------------------------------*/
#include ''stm32f4xx_hal.h''
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include <string.h>
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
UART_HandleTypeDef huart2;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
char
klaa[40];
volatile
uint8_t pufkuri[1];
volatile
char
isopuf[10];
int
c,kokon;
volatile
int
maara;
double
ccc,kkk;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void
SystemClock_Config(
void
);
void
Error_Handler(
void
);
static
void
MX_GPIO_Init(
void
);
static
void
MX_ADC1_Init(
void
);
static
void
MX_USART2_UART_Init(
void
);
int
main(
void
)
{
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC1_Init();
MX_USART2_UART_Init();
/* USER CODE BEGIN 1 */
maara=0;
strcpy
(klaa, 
''\0''
);
strcpy
(klaa, 
''adcusart16082016''
);
c=
strlen
(klaa);
// strcpy(klaa,b);
HAL_UART_Transmit(&huart2,(uint8_t *) klaa,c,1000);
strcpy
(klaa, 
''\0''
);
strcpy
(klaa, 
''\n''
);
c=
strlen
(klaa);
HAL_UART_Transmit(&huart2,(uint8_t *) klaa,c,1000);
strcpy
(klaa, 
''\n''
);
strcpy
(klaa, 
''\0''
);
HAL_UART_Receive_IT(&huart2, (uint8_t *) pufkuri, 1) ;
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while
(1)
{
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1);
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc; 
//4
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc; 
//11
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
HAL_ADC_Start(& hadc1);
while
(HAL_OK!= HAL_ADC_PollForConversion(&hadc1, 1000))
{
}
ccc= HAL_ADC_GetValue(&hadc1)+ccc;
//16
kokon=ccc/16;
sprintf
(klaa,
''Readout %d \n''
, kokon);
c=
strlen
(klaa);
HAL_UART_Transmit(&huart2,(uint8_t *) klaa,c,1000);
strcpy
(klaa, 
''\0''
);
if
(maara>0)
{
HAL_UART_Transmit(&huart2,(uint8_t *) pufkuri,maara,1000);
maara=0;
strcpy
(klaa, 
'' kesk \n''
);
c=
strlen
(klaa);
HAL_UART_Transmit(&huart2,(uint8_t *) klaa,c,1000);
HAL_UART_Receive_IT(&huart2, (uint8_t *) pufkuri, 1) ;
}
HAL_Delay(500);
}
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
}
void
HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
isopuf[maara]=pufkuri[0];
maara++;
}

[Tesla DeLorean]

Posted on August 18, 2016 at 19:03

I am receiving serial data one byte at a time. For that I need an one byte array, I think. Does it have to be an array? One byte array is not much of  an array. This works:

''volatile uint8_t pufkuri[1];''How to use something else than an array? I have gotten warnings and latest test gave this:''#142: expression must have pointer-to-object type''It just wants a pointer and a lengthvolatile uint8_t foo;HAL_UART_Receive_IT(&huart2, (uint8_t *) &foo, 1);