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@@ -1342,7 +1342,9 @@ static void IRAM_ATTR i2c_master_cmd_begin_static(i2c_port_t i2c_num)
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p_i2c->cmd_idx = 0;
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if (i2c_cmd_is_single_byte(cmd) || cmd->total_bytes == cmd->bytes_used) {
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p_i2c->cmd_link.head = p_i2c->cmd_link.head->next;
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- p_i2c->cmd_link.head->cmd.bytes_used = 0;
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+ if(p_i2c->cmd_link.head) {
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+ p_i2c->cmd_link.head->cmd.bytes_used = 0;
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+ }
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}
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p_i2c->status = I2C_STATUS_WRITE;
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break;
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