#include "sx60.h" #include "i2cmaster.h" bool i2c_initialized = 0; uint8_t mcp23018_status = 0x20; uint8_t init_mcp23018(void) { mcp23018_status = 0x20; /* I2C subsystem */ if (i2c_initialized == 0) { i2c_init(); // on pins D(1,0) i2c_initialized = true; _delay_ms(1000); } /* B Pins are Row, A pins are Columns Set them to output */ mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out; mcp23018_status = i2c_write(0b11111111); if (mcp23018_status) goto out; /* Now write to IODIRB */ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out; i2c_stop(); mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out; mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out; mcp23018_status = i2c_write(0b11111111); if (mcp23018_status) goto out; /* Now write to GPPUB */ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out; out: i2c_stop(); return mcp23018_status; } tr> aboutsummaryrefslogtreecommitdiffstats
path: root/util/msys2_install.sh
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