Reference no: EM132391443

EE344 Solid-State Power Electronics Assignment - United States Naval Academy, USA

Prepare the C program for Stepper Motor.

Description: A 4-pole stepper motor has 4 inputs and can rotate clockwise and counterclockwise in either 90 degrees (full step mode) or 45 degrees (half step mode) per step. The diagram of a 4-pole stepper motor is shown in Figure 10.8. As long the user applies the sequence given in Table 10.1, the stepper motor will rotate a cycle in full-step mode. If the user applies the sequence given in Table i0.2, the stepper motor will rotate a cycle in half-step mode.

Table 10.1 Full-step sequence for clockwise rotation

Step	Q4 PA3	Q3 PA2	Q2 PA1	Q1 PA0	Value
1	on	on	off	off	1100
2	off	on	on	off	0110
3	off	off	on	on	0011
4	on	off	off	on	1001

Table 10.2 Half-step sequence for clockwise rotation

Step	Q4 PA3	Q3 PA2	Q2 PA1	Q1 PA0	Value
1	on	off	off	off	1000
2	on	on	off	off	1100
3	off	on	off	off	0100
4	off	on	on	off	0110
5	off	off	on	off	0010
6	off	off	on	on	0011
7	off	off	off	on	0001
8	on	off	off	on	1001

A button is connected to the PC13 pin in your demo kit. This button allows you to generate an interrupt to the microcontroller. The user press this button to start the rotation in the following manner forever:

When the user presses the button for the first time, the stepper motor rotates in the following manner:

1.1 The motor rotates clockwise in full-step mode for 5 seconds.

1.2 The motor rotator counterclockwise in full-step mode for 5 seconds.

1.3 The motor rotator clockwise in half-step mode for 5 seconds.

1.4 The motor rotator counterclockwise in half-step mode for 5 seconds.

When the user presses the button for the second time, the stepper motor rotates in the following manner:

2.1 The motor rotates counterclockwise in half-step mode for 5 seconds.

2.2 The motor rotates clockwise in half-step mode for 5 seconds.

2.3 The motor rotates counterclockwise in full-step mode for 5 seconds.

2.4 The motor rotates clockwise in full-step mode for 5 seconds.