AN2491

STW8110x API package

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STW8110x API package

It is highly recommended to read the STW81101, STW81102 or STW81103 datasheet

before continuing to read this document. This API is a simple abstraction of the principles

presented in these datasheets.

their internal registers to be programmed. Each of these interfaces has its own dedicated

protocol which must be followed to program the device correctly. For details of the

1.1

Content

Three files are available in this package. A fourth file must be created by the user with

Figure 1.

Files available with this package

1.1.1

Digital bus interface header file

Contains declarations of functions to be implemented by the user (refer to

Section 8 for a

complete listing). This subsection describes the tasks that the functions must accomplish.

For more details about the digital bus protocol flow and configuration to apply to your master

interface (as frequency) please refer to the STW81101, STW81102 or STW81103

datasheet.

t_I2C_Ack I2C_Send_data(unsigned char *data, int nb_bytes)

{

// 1 - Send Start Bit

// 2 - loop i=1 to i=nb_bytes

//

a - send data[i]

//

b - wait acknowledge of slave

// 3 - Send Stop Bit

// return ACK, or NO_ACK if acknowledge hasn’t been received

}

t_I2C_Ack I2C_Read_data(unsigned char Add, unsigned char *data)

{

// 1 - Send Start Bit

// 2 - send Add

// 3 - wait acknowledge of slave

1. Digital bus interface header file

2. STW8110x API header file

3. STW8110x API source file