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Fix for I2C bus not always working correctly after a slave device call end() #319

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Merged
merged 1 commit into from
May 20, 2024
Merged

Fix for I2C bus not always working correctly after a slave device call end() #319

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9 changes: 6 additions & 3 deletions libraries/Wire/Wire.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -437,25 +437,28 @@ void TwoWire::end(void) {
if(init_ok) {
if(is_master) {
if(m_close != nullptr) {
m_close(&m_i2c_ctrl);
R_BSP_IrqDisable (m_i2c_cfg.txi_irq);
R_BSP_IrqDisable (m_i2c_cfg.rxi_irq);
R_BSP_IrqDisable (m_i2c_cfg.tei_irq);
R_BSP_IrqDisable (m_i2c_cfg.eri_irq);

m_close(&m_i2c_ctrl);
}
}
else {
if(s_close != nullptr) {
s_close(&s_i2c_ctrl);
R_BSP_IrqDisable (s_i2c_cfg.txi_irq);
R_BSP_IrqDisable (s_i2c_cfg.rxi_irq);
R_BSP_IrqDisable (s_i2c_cfg.tei_irq);
R_BSP_IrqDisable (s_i2c_cfg.eri_irq);
s_close(&s_i2c_ctrl);

}
}
}
/* fix for slave that create a sort of lock on the I2C bus when end is called and the master
is not more able to get the I2C buse working */
R_IOPORT_PinCfg(NULL, g_pin_cfg[sda_pin].pin, IOPORT_CFG_PORT_DIRECTION_INPUT | IOPORT_CFG_PULLUP_ENABLE);
R_IOPORT_PinCfg(NULL, g_pin_cfg[scl_pin].pin, IOPORT_CFG_PORT_DIRECTION_INPUT | IOPORT_CFG_PULLUP_ENABLE);
init_ok = false;
}

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