Hello
I'm going to use J-link's virtual port to see the characters being printed.
I connected custom pcb to Vcc, Swdio, Swclk, Gnd pin and tx, rx pin of J-link.
And I opened the port in the serial terminal and checked it, and as shown in the picture below, the data are broken and printed out.
The circuit diagram has tx, rx connected to the 6 and 8 pins.
Can you tell me why the data is broken in the serial terminal like this?
Thank you.
Hi.
Hard to say what is causing this.
Maybe you could add some more data on how you are sending data, connecting to the device, what kind of device you are using (on both sides), SDK version etc.
Br,
Joakim
Hi, Joakim.
I use nrf52832 and J-link EDU and sdk v17.0.
I am testing with UART example for a test. I revised the code of pca10040.h and could this be a problem?
#ifndef PCA10040_H
#define PCA10040_H
#ifdef __cplusplus
extern "C" {
#endif
#include "nrf_gpio.h"
#define LEDS_NUMBER 5
#define LED_START 16
#define LED_1 17
#define LED_2 19 //Pairing LED
#define LED_6 16 //LED 6~10 : BAT_LED
#define LED_7 18
#define LED_8 20
#define LED_9 30
#define LED_10 31
#define LED_STOP 31
#define LEDS_ACTIVE_STATE 0
#define LEDS_INV_MASK LEDS_MASK
//#define LEDS_LIST { LED_1, LED_2, LED_3, LED_4 }
#define LEDS_LIST {BAT_LED_1, BAT_LED_2, BAT_LED_3, BAT_LED_4, BAT_LED_5} //PCB LED
#define LEDS_LIST2 {BAT_LED_3, BAT_LED_2, BAT_LED_1, BAT_LED_4} //Left move LED
#define LEDS_LIST3 {BAT_LED_1, BAT_LED_2, BAT_LED_3, BAT_LED_5} //Right move LED
#define BSP_LED_0 LED_1
#define BSP_LED_1 LED_2
#define BSP_LED_2 LED_3
#define BSP_LED_3 LED_4
#define BSP_LED_4 LED_5
#define BUTTONS_NUMBER 1
//#define BUTTONS_NUMBER 4
#define BUTTON_START 28
#define BUTTON_1 28
//#define BUTTON_2 14
//#define BUTTON_3 15
//#define BUTTON_4 16
#define BUTTON_STOP 28
#define BUTTON_PULL NRF_GPIO_PIN_PULLUP
#define BUTTONS_ACTIVE_STATE 0
#define BUTTONS_LIST { BUTTON_1}
#define BSP_BUTTON_0 BUTTON_1
//8,6 : DK board 6,8 : PCB
#define RX_PIN_NUMBER 6
#define TX_PIN_NUMBER 8
#define CTS_PIN_NUMBER 7
#define RTS_PIN_NUMBER 5
#define HWFC true
/*#define SPIS_MISO_PIN 28 // SPI MISO signal.
#define SPIS_CSN_PIN 12 // SPI CSN signal.
#define SPIS_MOSI_PIN 25 // SPI MOSI signal.
#define SPIS_SCK_PIN 29 // SPI SCK signal.
#define SPIM0_SCK_PIN 29 // SPI clock GPIO pin number.
#define SPIM0_MOSI_PIN 25 // SPI Master Out Slave In GPIO pin number.
#define SPIM0_MISO_PIN 28 // SPI Master In Slave Out GPIO pin number.
#define SPIM0_SS_PIN 12 // SPI Slave Select GPIO pin number.
#define SPIM1_SCK_PIN 2 // SPI clock GPIO pin number.
#define SPIM1_MOSI_PIN 3 // SPI Master Out Slave In GPIO pin number.
#define SPIM1_MISO_PIN 4 // SPI Master In Slave Out GPIO pin number.
#define SPIM1_SS_PIN 5 // SPI Slave Select GPIO pin number.
#define SPIM2_SCK_PIN 12 // SPI clock GPIO pin number.
#define SPIM2_MOSI_PIN 13 // SPI Master Out Slave In GPIO pin number.
#define SPIM2_MISO_PIN 14 // SPI Master In Slave Out GPIO pin number.
#define SPIM2_SS_PIN 15 // SPI Slave Select GPIO pin number.
// serialization APPLICATION board - temp. setup for running serialized MEMU tests
#define SER_APP_RX_PIN 23 // UART RX pin number.
#define SER_APP_TX_PIN 24 // UART TX pin number.
#define SER_APP_CTS_PIN 2 // UART Clear To Send pin number.
#define SER_APP_RTS_PIN 25 // UART Request To Send pin number.
#define SER_APP_SPIM0_SCK_PIN 12 // SPI clock GPIO pin number.
#define SER_APP_SPIM0_MOSI_PIN 13 // SPI Master Out Slave In GPIO pin number
#define SER_APP_SPIM0_MISO_PIN 14 // SPI Master In Slave Out GPIO pin number
#define SER_APP_SPIM0_SS_PIN 23 // SPI Slave Select GPIO pin number
#define SER_APP_SPIM0_RDY_PIN 25 // SPI READY GPIO pin number
#define SER_APP_SPIM0_REQ_PIN 24 // SPI REQUEST GPIO pin number
// serialization CONNECTIVITY board
#define SER_CON_RX_PIN 24 // UART RX pin number.
#define SER_CON_TX_PIN 23 // UART TX pin number.
#define SER_CON_CTS_PIN 25 // UART Clear To Send pin number. Not used if HWFC is set to false.
#define SER_CON_RTS_PIN 2 // UART Request To Send pin number. Not used if HWFC is set to false.
#define SER_CON_SPIS_SCK_PIN 27 // SPI SCK signal.
#define SER_CON_SPIS_MOSI_PIN 2 // SPI MOSI signal.
#define SER_CON_SPIS_MISO_PIN 26 // SPI MISO signal.
#define SER_CON_SPIS_CSN_PIN 23 // SPI CSN signal.
#define SER_CON_SPIS_RDY_PIN 25 // SPI READY GPIO pin number.
#define SER_CON_SPIS_REQ_PIN 24 // SPI REQUEST GPIO pin number. */
#define SER_CONN_CHIP_RESET_PIN 21 //11 // Pin used to reset connectivity chip
// Arduino board mappings
#define ARDUINO_SCL_PIN 27 // SCL signal pin
#define ARDUINO_SDA_PIN 26 // SDA signal pin
#define ARDUINO_AREF_PIN 2 // Aref pin
/*#define ARDUINO_13_PIN 25 // Digital pin 13
#define ARDUINO_12_PIN 24 // Digital pin 12
#define ARDUINO_11_PIN 23 // Digital pin 11
#define ARDUINO_10_PIN 22 // Digital pin 10
#define ARDUINO_9_PIN 20 // Digital pin 9
#define ARDUINO_8_PIN 19 // Digital pin 8
#define ARDUINO_7_PIN 18 // Digital pin 7
#define ARDUINO_6_PIN 17 // Digital pin 6
#define ARDUINO_5_PIN 16 // Digital pin 5
#define ARDUINO_4_PIN 15 // Digital pin 4
#define ARDUINO_3_PIN 14 // Digital pin 3
#define ARDUINO_2_PIN 13 // Digital pin 2
#define ARDUINO_1_PIN 12 // Digital pin 1
#define ARDUINO_0_PIN 11 // Digital pin 0
#define ARDUINO_A0_PIN 2 // Analog channel 0
#define ARDUINO_A1_PIN 3 // Analog channel 1
#define ARDUINO_A2_PIN 4 // Analog channel 2
#define ARDUINO_A3_PIN 5 // Analog channel 3
#define ARDUINO_A4_PIN 28 // Analog channel 4
#define ARDUINO_A5_PIN 29 // Analog channel 5
#define ARDUINO_A6_PIN 30 // Analog channel 6
#define ARDUINO_A7_PIN 31 // Analog channel 7
*/
#define APP_BTN_1 28 //POWER_STATE pin
//#define BAT_ADC 3 //A0
#define BUZZER_PIN 25
#define BAT_LED_1 16
#define BAT_LED_2 18
#define BAT_LED_3 20
#define BAT_LED_4 30
#define BAT_LED_5 31
#define Pairing_LED 19
#define POWER_SW 29 //POWER_HOLD pin
#define bat_state 22 //battery charge state(CHG)
#ifdef __cplusplus
}
#endif
#endif // PCA10040_H
Thank you.
I can't see any problems with that.
Are you sure that your application doesn't use the same pins as the uart for anything else that might brake the data?
Also, if the pins are left floating this might happen, but it doesn't seem like that could be the issue?
Br
There have been many problems with the custom PCB that I'm testing. (There are some problems, such as turning off the power just by the microcurrent of the hand.)
I think this problem might be a hardware problem. I will check it again and test it.
Thank you.
Ok, thank you for letting me know.
Let me know if there is someting else I can help you with!
Br,
Joakim