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software/libbase/i2c/i2c_poll: Also test for write when polling since some I2C devices do not respond to read or require a specific protocol.

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Florent Kermarrec 2022-04-11 09:52:00 +02:00
parent 9806f76619
commit 1989d85b91
1 changed files with 2 additions and 1 deletions
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3
litex/soc/software/libbase/i2c.c
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@ -261,7 +261,8 @@ bool i2c_poll(unsigned char slave_addr)
bool result; bool result;
i2c_start(); i2c_start();
result = i2c_transmit_byte(I2C_ADDR_RD(slave_addr)); result = i2c_transmit_byte(I2C_ADDR_WR(slave_addr));
result |= i2c_transmit_byte(I2C_ADDR_RD(slave_addr));
i2c_stop(); i2c_stop();
return result; return result;