Serial Data Ports

Sections
	I2C Serial Data Ports
	UART Serial Data Ports

Description

Serial Data Ports (SDP) is a term used in the Netcruzer Library for many different modules that use data serially. All serial communication ports, like the UARTs, I2C port, SPI Port, UDP Port, TCP Ports... are referred to as "Serial Data Port". There are also a couple of General purpose "Serial Data Port" that can be used in user applications. All "Serial Data Port" use Circular Buffers for transferring data.

Serial Data Port Numbers

All Serial Data Ports are assigned numbers:

0 = Default Debug Port 1 = UART 1 2 = UART 2 3 = UART 3 4 = UART 4 5 = SPI 1 6 = SPI 3 7 = I2C 1 8 = I2C 2 9 = I2C 3 10(a) = UDP 1 11(b) = UDP 2 12(c) = UDP 3

13(d) = TCP 1 14(e) = TCP 2 15(f) = TCP 3 16(g) = USB HID Port 1 17(h) = User 1 General Purpose Serial Data Port 18(i) = User 2 General Purpose Serial Data Port 19(j) = User 3 General Purpose Serial Data Port 20(k) = User 4 General Purpose Serial Data Port 21(l) = User 5 General Purpose Serial Data Port 22(m) = User 6 General Purpose Serial Data Port 23(n) = User 7 General Purpose Serial Data Port 24(o) = User 8 General Purpose Serial Data Port

The number of circular buffers. Each "Serial Data Port" consists of a TX and RX circular buffer. There are thus BUF_COUNT/2 "Serial Data Ports"

Serial Data Port Buffers

Each "Serial Data Port" has a transmit and receive buffer. They are identified by their "Serial Data Port Buffer ID" number.

• The "Serial Data Port Buffer ID" for the transmit buffer = SERPORT_ID * 2
• The "Serial Data Port Buffer ID" for the receive buffer = (SERPORT_ID * 2) + 1

For example, the "Serial Data Port ID" for I2C 1 is 7. It's transmit buffer will have the "Serial Data Port Buffer ID" of 14 (7*2), and it's receive buffer will be 15.

• Must match sequence of bits in SER_AVAIL structures
• Must match order of members in CFG_BLOCK_SER. First 'uart1', then 'uart2' .....