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Last post
Tue, 2019-04-16 09:08
#1
Jasu
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加入:2019-01-23 10:26
decimal values in uart

i want to print decimal value of equalent binary vale. how can i print binary values in uart ?

printf_byte_dec function is not working!!!???

Keywords:
UART
Device:
DA14585
Tue, 2019-04-16 17:16
PM_Dialog
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加入:2018-02-08 11:03
Hi Jasu,

Hi Jasu,

The the printf_byte_dec() function that will print a byte value in decimal format. When using the BLE examples you can use the arch_printf() function for debugging where you can choose the format between decimal, hexadecimal, character or string. Could you please provide me a short code snippet? Which are your results?

Thanks, PM_Dialog

Wed, 2019-04-17 06:50
(Reply to #2)
Jasu
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Last seen:1 year 10 months ago
加入:2019-01-23 10:26
voltage=(adc_value*5)/1023;

voltage=(adc_value*5)/1023;
printf_byte_dec(voltage);
printf_string("\n\r\n\r");
resistance=( (5 * ( 100.0 / voltage ) ) - 100 );
Rln=log(resistance);
temperature = ( 1 / ( 0.001129148 + ( 0.000234125 *Rln) + ( 0.0000000876741 * Rln * Rln* Rln) ) );
printf_byte_dec(temperature);

but nothing is printed on uart?

if iam using printf_byte i will get hex values !!

how to fix this? is is it possible to print decimal values?

Thu, 2019-04-18 17:24
PM_Dialog
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Hi Jasu,

Hi Jasu,

In my previous post, I suggested you to use the arch_printf () API from arc_console.h library. I worked on the ble_app_barebone example of the SDK 5.0.4 and I used the Pro-DK. Let me describe what I did and make sure that you have done the same configurations.

  1. #define CFG_PRINTF in the da1458x_config_basic.h
  2. Change the uart ports of the fw and assign the UART_TX port/pin to P04 and UART_RX port/pin to P05 (make sure that the configuration that you have changed is under the HW_CONFIG_PRO_DK and that this the board declared in the HW_CONFIG definition).

#elif HW_CONFIG_PRO_DK

#define UART2_TX_GPIO_PORT GPIO_PORT_0

#define UART2_TX_GPIO_PIN GPIO_PIN_4

#define UART2_RX_GPIO_PORT GPIO_PORT_0

#define UART2_RX_GPIO_PIN GPIO_PIN_5

If you have one other of our DKs or if you are working on a custom board, please modify the definitions above with the appropriate GPIOs

  1. Include the arch_console.h file into user_barebone.c
  2. Invoke arch_printf()
  3. Change the baud rate of the terminal into 115200.

In order to print decimal values you should use the “%d” in the arch_printf(). Please check some example codes.

uint8_t my_data[3] = {10 , 11 , 12}; //decimal arch_printf("uint8_t my_data[3] = {10 , 11 , 12}; //decimal"); arch_printf("\r\n"); arch_printf("DEC: %d %d %d" ,my_data[0] ,my_data[1],my_data[2]); arch_printf("\r\n"); arch_printf("HEX: %x %x %x" ,my_data[0] ,my_data[1],my_data[2]); arch_printf("\r\n"); arch_printf("\r\n"); uint8_t my_data_hex[3] = {0x10 , 0x11 , 0x12}; //hex arch_printf("uint8_t my_data_hex[3] = {0x10 , 0x11 , 0x12}; //hex"); arch_printf("\r\n"); arch_printf("DEC: %d %d %d" ,my_data_hex[0] ,my_data_hex[1],my_data_hex[2]); arch_printf("\r\n"); arch_printf("HEXL %x %x %x" ,my_data_hex[0] ,my_data_hex[1],my_data_hex[2]);

If you would like to print floating point numbers. You should follow the procedure described in the below forum thread:

https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-software/floating-point

Thanks, PM_Dialog