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@@ -62,18 +62,20 @@ bool pcal6416a_init(void) {
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// ERROR HANDLING; you can check errno to see what went wrong
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return false;
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}
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+
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+ /// Probing known I2C GPIO expander chips
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for (i = 0, i2c_expander_addr = 0; i2c_chip[i].address; i++) {
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- /// Probing I2C GPIO expander chip
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if (ioctl(fd_i2c_expander, I2C_SLAVE_FORCE, i2c_chip[i]) < 0 ||
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pcal6416a_read_mask_interrupts() < 0) {
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- printf("In %s - Failed to acquire bus access and/or talk to slave %s at address 0x%02X.\n",
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+ DEBUG_PRINTF("In %s - Failed to acquire bus access and/or talk to slave %s at address 0x%02X.\n",
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__func__, i2c_chip[i].name, i2c_chip[i].address);
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- } else {
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- DEBUG_PRINTF("Found I2C gpio expander chip %s at address 0x%02X\n",
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- i2c_chip[i].name, i2c_chip[i].address);
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- i2c_expander_addr = i2c_chip[i].address;
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- }
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+ } else {
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+ DEBUG_PRINTF("Found I2C gpio expander chip %s at address 0x%02X\n",
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+ i2c_chip[i].name, i2c_chip[i].address);
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+ i2c_expander_addr = i2c_chip[i].address;
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+ break;
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+ }
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}
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/// GPIO expander chip found?
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