ST STM8/128-EVAL, User Manual

Page: 12 / 19

Demonstration applications UM0501
16/23 Doc ID 14320 Rev 3
2.11 MICROSD demo
This mode demonstrates the basic operation of the MicroSD card interface.
1. When this mode is entered, it checks if a MicroSD card is inserted in the slot.
– If no card is found, the message shown in Figure 16 is displayed.
Figure 16. No card found
– When a MicroSD card is detected, another message is displayed (see Figure 17 ).
Figure 17. Card detected
2. Then the MicroSD card is initialized, followed by a Write block (512 bytes) and a Read
block operation. See
Figure 18 for the messages displayed consecutively on the LCD
screen.
Figure 18. MicroSD card initialization
3. When this phase is complete, the message shown in Figure 19 is displayed.
By pressing the joystick to LEFT or RIGHT , you can display the 512 bytes of data read
from the MicroSD card. The data should be equal to the address low byte.
Please
Insert MicroSD
MicroSD card
Detected
Init
PASS
Write Block
PASS
Read Block
PASS