DM164130-1 Microchip Technology, DM164130-1 Datasheet - Page 21

• Manufacturer Part Number: DM164130-1
• Description: BOARD EVAL PICKIT PIC16LF1937
• Manufacturer: Microchip Technology
• Series: PICkit™r
• Type: MCUr

Specifications of DM164130-1

• Contents: Board
• Processor To Be Evaluated: PIC16LF1937
• Processor Series: PICxxF1xxx
• Data Bus Width: 8 bit
• Operating Supply Voltage: 1.8 V to 3.6 V
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC16
• Silicon Core Number: PIC16F
• Silicon Family Name: PIC12F1xxx, PIC16F1xxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC16LF1937
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.1
5.2
5.3
5.4
5.5
© 2009 Microchip Technology Inc.
INTRODUCTION
I
MCP9800 DRIVER
RTCC DRIVER
LCD DRIVER
2
C™ DRIVER
Chapter 5. Hardware Libraries and Drivers
All of the demo code uses a common set of libraries to provide I
MCP9800 and LCD services. These libraries may be useful for other applications so
they are documented here. These drivers are located at www.microchip.com/F1Eval.
The I
or by polling. The driver is configured during compilation to support polling or interrupts.
The I
polls the I
The MCP9800 driver uses the I
mcp9800_get_temp function is fully blocking, so once a request is queued, the driver
polls the I
interrupts, the mcp9800_get_temp function repeatedly calls the I2C_handler
function to process all the I
mcp9800_get_temp function simply inserts an I2C_TRANSACTION_T into the I
transaction queue and waits for the transaction to complete.
A software RTCC is managed by the supplied RTCC driver. This driver implements the
time() function required by the C compiler. Time is internally kept as seconds since
January 1, 1970. Standard C functions can be used to convert the time to the current
date. This driver has two modes. In the first mode, it expects to be called once per
second by the Timer1 interrupt. In the second mode, it expects to be called on every
LCD mode B frame. This allows the RTCC to keep accurate time even if Timer1 is being
used by some other function, such as the BLDC motor driver.
The LCD driver contains the initialization code required for the LCD peripheral and the
mapping code required to control the 3.5-digit LCD supplied with this demo board. It is
a good starting point for the LCD driver your unique application will require.
2
2
C driver allows I
C and LCD demos configure the driver for interrupt mode. The Combined demo
2
2
C subsystem until the data is complete. If the I
C handler within the MCP9800 driver.
2
C requests to be queued and then handled either by interrupts
2
C events. If the I
F1 EVALUATION PLATFORM
2
C driver to get the current temperature. The
2
C driver is operating with interrupts, the
2
USER’S GUIDE
C driver is operating without
2
C, real-time clock,
DS41401A-page 21
2
C