fix typos in existing blurb and minor comment update

Author: applecuckoo

ports/nordic/boards/arduino_nano_33_ble/README.md

@@ -1,11 +1,11 @@
 # Arduino Nano 33 BLE and Nano 33 BLE Sense
 
 The [Arduino Nano 33 BLE](https://store.arduino.cc/usa/nano-33-ble-with-headers) and
-[Arduino Nano 33 BLE Sense](https://store.arduino.cc/usa/nano-33-ble-sense) and
-are built around the NINA B306 module, based on Nordic nRF 52840 and containing
-a powerful Cortex M4F. Both include an onboard 9 axis Inertial Measurement Unit (IMU), the LSM9DS1.
-The Nano 33 BLE Sense adds an LPS22HB barometric pressure and temperature sensor,
-an ADPS-9960 digital proximity, ambient light, RGB, and gensture sensor,
+[Arduino Nano 33 BLE Sense](https://store.arduino.cc/usa/nano-33-ble-sense)
+are built around the NINA-B306 module, based on the Nordic nRF52840 and containing
+a powerful Cortex-M4F. Both include an onboard 9-axis Inertial Measurement Unit (IMU), the LSM9DS1.
+The Nano 33 BLE Sense adds an LPS22HB barometric pressure and temperature sensor, an HTS221 humidity sensor,
+an APDS-9960 digital proximity, ambient light, RGB, and gesture sensor,
 and an MP34DT05 digital microphone.
 
 Note: the Arduino Nano 33 BLE and BLE Sense do not include a QSPI external
@@ -15,11 +15,11 @@ filesystem.
 I2C pins `board.SCL1` and `board.SDA1` are not exposed and are used for onboard peripherals.
 Pin `board.R_PULLUP` must be set to high to enable the `SCL1` and `SDA1` pullups for proper operation.
 
-Pin `board.VDD_ENV` applies power to the LSM9DS1, and must be high for it to be operational.
+Pin `board.VDD_ENV` applies power to the LSM9DS1, the LPS22HB, and the HTS221, and must be high for them to be operational.
 
 Pins `board.MIC_PWR`, `board.PDMDIN`, and `board.PDMCLK` are for the Nano 33 BLE Sense onboard microphone.
 
-Pin `board.INT_ADPS` is the interrupt pin from the ADPS-9960.
+Pin `board.INT_APDS` is the interrupt pin from the APDS-9960.
 
 Pins `board.RGB_LED_R`, `board.RGB_LED_G`, and `board.RGB_LED_B`
 are the red, green and blue LEDS in the onboard RGB LED.

ports/nordic/boards/arduino_nano_33_ble/pins.c

@@ -48,7 +48,7 @@ static const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_RGB_LED_G), MP_ROM_PTR(&pin_P0_16)  },
     { MP_ROM_QSTR(MP_QSTR_RGB_LED_B), MP_ROM_PTR(&pin_P0_06)  },
 
-    // Power line to LSM9DS1.
+    // Power line to LSM9DS1, LPS22 and HTS221
     { MP_ROM_QSTR(MP_QSTR_VDD_ENV), MP_ROM_PTR(&pin_P0_22)  },
 
     // Pullup voltage for SDA1 and SCL1