PSoC™ Creator & Designer Forum Discussions

Hi,

I'm using the PSoC 3 UART function and seem to be having problems getting the data in a simple application.

If I am using a terminal window to type characters, everything works fine but if I programmatically send a string, it appears that the FIFO wraps around and the LF winds up in the first character in the buffer.

What I tried to do is read the status to see when a character comes in (UART_1_RX_STS_FIFO_NOTEMPTY), then go into a loop almost identical to the example in the datasheet.that takes all the characters until the CR-LF. .

I have put a UART_1_GetRxBufferSize() to see if more than one character has arrived but I never see more than one at a time.

Any ideas to prevent me from days of hacking and guessing?

Regards,

Nick

PLease let me know if there are any thoughts on this error. I am using PSoC Creator 4.1

Hello,

I am facing one issue with CY8CMBR3116. In my application, I am using 12 sensors instead of 16. Its working fine. Now as per my application need, I keep only 6 sensors enable during sleep mode of host controller by initializing CY8CMBR3116 and whenever host controller is wake up, I re-initialize the CY8CMBR3116 to enable 12 sensors. But it is observed that CY8CMBR3116 never get re-initialized. It keeps only 6 sensors enable and rest disable.

So, can you please tell me why this is happening?

The sequence I am following is as follows,

• CYPRESS_CAPSENSE_DEVICE_ADD – 0x6E and All registers addresses are as mentioned in the “Capsense Controllers registers TRM” document ***

Cypress_Module_Data[0] = 0x40; /* Configure host interrupt pulse at SPO1 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SPO_CFG_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0xFE; /* CS2 to CS7 enable and CS0 - CS1 disable */

Cypress_Module_Data[1] = 0x1F; /* CS8 to CS13 enable and CS14 - CS15 disable */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SENSOR_ENABLE_ADD, 1, Cypress_Module_Data, sizeof(Cypress_Module_Data), 4);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0xFE; /* CS2 to CS7 FSS enable and CS0 - CS1 FSS disable */

Cypress_Module_Data[1] = 0x1F; /* CS8 to CS13 FSS enable and CS14 - CS15 FSS disable */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FSS_ENABLE_ADD, 1, Cypress_Module_Data, sizeof(Cypress_Module_Data), 4);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0; /* Disable Automatic threshold setting */

Cypress_Module_Data[1] = 0;

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, DEVICE_CFG2_ADD, 1,&Cypress_Module_Data[0], 1, 2); // Disable AUtomatic threshold setting.

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_SENSITIVITY; /* 0xFF */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SENSITIVITY_0_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_SENSITIVITY; /* 0xFF */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SENSITIVITY_1_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_SENSITIVITY ;/* 0xFF */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SENSITIVITY_2_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_SENSITIVITY;/* 0xFF */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, SENSITIVITY_3_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD; /* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, BASE_THRESHOLD_0_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD; /* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, BASE_THRESHOLD_1_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_2_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_3_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_4_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_5_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_6_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_7_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_8_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_9_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_10_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_11_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_12_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = FINGER_THRESHOLD;/* 100 */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, FINGER_THRESHOLD_13_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = CYPRESS_REFRESH_INTERVAL;/* 3 - 60mS refresh interval */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, REFRESH_CONTROL_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0x9E; /* Write button hysteresis value and enable overwrite */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, BUTTON_HYS_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

/*Reset The Cypress Capsense IC */

Cypress_Module_Data[0] = 0x03; /* Send calculate CRC command */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CNTRL_CMD_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0x00; /* Read the calculated CRC value */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Read(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CALC_CRC_ADD, 1, Cypress_Module_Data, 2, 4);

HAL_Delay(5);/* Delay of 5mS */

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CONFIG_CRC_ADD, 1, Cypress_Module_Data, 2, 4);//Write the CRC value to control register */

HAL_Delay(5);/* Delay of 5mS */

Cypress_Module_Data[0] = 0x02; /* Save the configuration data to non-volatile memory */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CNTRL_CMD_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(220);/* Delay of 220mS */

Cypress_Module_Data[0] = 0x00; /* Read the control command status register to check whether configuration is saved successfully */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Read(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CNTRL_CMD_STATUS_ADD, 1, Cypress_Module_Data, 1, 2);

HAL_Delay(10);/* Delay of 10mS */

Cypress_Module_Data[0] = 0xFF; /* Issue the reset command once the configuration data saved successfully */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Write(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, CNTRL_CMD_ADD, 1, &Cypress_Module_Data[0], 1, 2);

HAL_Delay(300);/* Delay of 300mS */

/* Read the values written to Cypress IC registers */

Cypress_Module_Data[0] = 0x00; /* Check written data is saved */

Cypress_Module_Data[1] = 0x00;

HAL_I2C_Mem_Read(&hi2c1, CYPRESS_CAPSENSE_DEVICE_ADD, BUTTON_HYS_ADD, 1, Cypress_Module_Data, 1, 2);

HAL_Delay(10);/* Delay of 10mS */

If any thing is missing in this sequence, please let me know.

Thanks & Regards,

Mamata Nivalkar