While you wait for a more targeted answer, you might be interested in some previous threads about about race and racism in Europe during the Renaissance:

Race and Early Modern Europe

• When did the concept of Race begin to emerge? - 25 comments, over 1 year old.

• There are a few summaries of "milestones" of the development of racism from the Age of Exploration to Age of Imperialism with a related article linked in the topmost comment.

• Europe had normal diplomatic relations with non-white nations before turning explosively racist to justify their actions against all others. What happened to cause this shift? - 22 comments, over 1 year old.

• A flaired commenter in this thread provides a multi-comment long overview of the "flowering" of racism and scientific racism in the 18th and 19th centuries at the height of European imperialism.

• What's the earliest recorded condemnation of racism anywhere in the world? - 78 comments, over 5 months old.

• Several primary source examples are brought up ranging from the Bible and the Hadiths to very Late Medieval and Early Modern European writings.

Black Africans in Pre-Modern Europe

• Did black people have rights in England before the slave trade began? - 54 comments, over 2 years old.

• This thread discusses the treatment of several Black British people before slavery became an important economic driver for the British and also has a lively discussion of the definition and details of slavery compared to other forms of labor.

• How could exotic Easterners come to be in a Medieval English Court? - 6 comments, over 8 months old.

• Multiple Late Medieval and Renaissance examples, articles, and book sources all packed into just a few comments with some examples of Black Africans in Europe being noted.

• Were there any Black (African) knights in Medieval Europe? - 28 comments, over 1 year old.

• Although not all of them knights, several examples are brought up and discussions are had about the sources involved.

• How alien would the idea of a non-white person be to somebody living in medieval England? - 8 comments, over 1 year old.

• More examples and several users provide information on beliefs and attitudes that white Europeans towards nonwhite people.

• Were there any Sub-Saharan Africans living in Medieval Europe? - 14 comments, over 8 months old.

• A commenter gives examples in Southern and Eastern Europe.

More information can be found in the newly created FAQ section on "Racism and Slavery".

You should probably try to ask a more focused question. What specifically are you interested in when you say "the situation of Africans?"