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add/fix mcp23017 i2c gpio expander functions and tests

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Change-Id: Ia2e5a1bf3f97272931014e54e587109297556c03
This commit is contained in:
Joachim Steiger
2019-10-24 18:09:05 +02:00
parent 3feadfa910
commit f7f1ea864d
6 changed files with 52 additions and 9 deletions
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2
firmware/libboard/octsimtest/include/mcp23017.h
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@@ -19,5 +19,7 @@
#define MCP23017_ADDRESS 0x20
int mcp23017_init(uint8_t slave);
int mcp23017_test(uint8_t slave);
int mcp23017_toggle(uint8_t slave);
//int mcp23017_write_byte(uint8_t slave, uint8_t addr, uint8_t byte);
//int mcp23017_read_byte(uint8_t slave, uint8_t addr);