MCP23S17 Test
Dependencies: MCP23S17 mbed mbed-rtos
main.cpp
- Committer:
- ryood
- Date:
- 2016-10-28
- Revision:
- 0:5610193796b3
- Child:
- 1:5321e8f5b339
File content as of revision 0:5610193796b3:
/* * MCP23S17 Test * * https://developer.mbed.org/users/romilly/code/MCP23S17/ * * Created: 2016.10.28 * */ #include "mbed.h" #include "MCP23S17.h" #define OPCODE (0x40) SPI Spi(PA_7, PA_6, PA_5); // mosi, miso, sclk // MCP23S17(SPI& spi, PinName ncs, char writeOpcode); MCP23S17 Mcp23s17(Spi, PB_6, OPCODE); int main() { printf("\r\n\n*** MCP23S17 Test ***\r\n"); // PORTA output Mcp23s17.direction(PORT_A, 0x00); // PORTB input Mcp23s17.direction(PORT_B, 0xFF); // PORTB pull-up Mcp23s17.configurePullUps(PORT_B, 0xFF); // LED Check for (int i = 0; i < 8; i++) { Mcp23s17.write(PORT_A, (1 << i)); wait(0.2); } Mcp23s17.write(PORT_A, 0x00); while (true) { char data = ~Mcp23s17.read(PORT_B); Mcp23s17.write(PORT_A, data); printf("%02x\r\n", data); } }