toshi mura / Mbed 2 deprecated NRP2020_main

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Dependencies:   mbed MCP23017

MCP/MCP.cpp@6:cd2671c141cc, 2020-02-01 (annotated)

Committer:
muratoshi
Date:
Sat Feb 01 06:40:55 2020 +0000
Revision:
6:cd2671c141cc
Parent:
2:32d2cd7d744b 
kaljrgaogivrjnae:

Who changed what in which revision?

UserRevisionLine numberNew contents of line
M_souta 0:db8d4af513c0 1 #include "MCP.h"
M_souta 0:db8d4af513c0 2 #include "mbed.h"
M_souta 1:5b0303768126 3 #include "MCP23017.h"
M_souta 0:db8d4af513c0 4
M_souta 0:db8d4af513c0 5 MCP::MCP(PinName sda, PinName scl, uint8_t device_address)
M_souta 1:5b0303768126 6 :i2c(sda, scl), mcp(i2c, device_address)
M_souta 0:db8d4af513c0 7 {
M_souta 1:5b0303768126 8 _iodir_data.all = 0xffff;
M_souta 2:32d2cd7d744b 9 _pull_data.all = 0xffff;
M_souta 1:5b0303768126 10 _read_data.all = 0x0000;
M_souta 1:5b0303768126 11 _write_data.all = 0x0000;
M_souta 1:5b0303768126 12 }
M_souta 1:5b0303768126 13
M_souta 1:5b0303768126 14 void MCP::PinMode(uint8_t pin, pin_mode mode)
M_souta 1:5b0303768126 15 {
M_souta 1:5b0303768126 16 if(mode == OUTPUT) {
M_souta 1:5b0303768126 17 _iodir_data.all &= ~(0x0001 << pin);
M_souta 1:5b0303768126 18 } else if(mode == INPUT) {
M_souta 1:5b0303768126 19 _iodir_data.all |= (0x0001 << pin);
M_souta 1:5b0303768126 20 } else if(mode == INPUT_PULLUP) {
M_souta 1:5b0303768126 21 _iodir_data.all |= (0x0001 << pin);
M_souta 1:5b0303768126 22 _pull_data.all |= (0x0001 << pin);
M_souta 1:5b0303768126 23 }
M_souta 0:db8d4af513c0 24 }
M_souta 0:db8d4af513c0 25
M_souta 1:5b0303768126 26 void MCP::Write(uint8_t pin, bool signal)
M_souta 1:5b0303768126 27 {
M_souta 1:5b0303768126 28 if(signal == 1) {
M_souta 1:5b0303768126 29 _write_data.all |= (0x0001 << pin);
M_souta 1:5b0303768126 30 } else {
M_souta 1:5b0303768126 31 _write_data.all &= ~(0x0001 << pin);
M_souta 1:5b0303768126 32 }
M_souta 1:5b0303768126 33 }
M_souta 1:5b0303768126 34
M_souta 1:5b0303768126 35 bool MCP::Read(uint8_t pin)
M_souta 0:db8d4af513c0 36 {
M_souta 1:5b0303768126 37 return (_read_data.all >> pin) & 0x01;
M_souta 1:5b0303768126 38 }
M_souta 1:5b0303768126 39
M_souta 2:32d2cd7d744b 40 void MCP::Update(void) {
muratoshi 6:cd2671c141cc 41 i2c.frequency(100000);
M_souta 2:32d2cd7d744b 42 char data[2] = {GPPUA, 0xff};
M_souta 2:32d2cd7d744b 43 int lost = i2c.write(0x40, data, 2);
M_souta 2:32d2cd7d744b 44 if(lost) {
M_souta 2:32d2cd7d744b 45 i2c.start();
M_souta 2:32d2cd7d744b 46 }
M_souta 1:5b0303768126 47 mcp.direction(PORT_A, _iodir_data.port.port_A);
M_souta 1:5b0303768126 48 mcp.direction(PORT_B, _iodir_data.port.port_B);
M_souta 1:5b0303768126 49 mcp.configurePullUps(PORT_A, _pull_data.port.port_A);
M_souta 1:5b0303768126 50 mcp.configurePullUps(PORT_B, _pull_data.port.port_B);
M_souta 1:5b0303768126 51 _read_data.port.port_A = mcp.read(PORT_A);
M_souta 1:5b0303768126 52 _read_data.port.port_B = mcp.read(PORT_B);
M_souta 2:32d2cd7d744b 53 mcp.write(PORT_A, _write_data.port.port_A);
M_souta 2:32d2cd7d744b 54 mcp.write(PORT_B, _write_data.port.port_B);
M_souta 2:32d2cd7d744b 55
M_souta 1:5b0303768126 56 }
M_souta 2:32d2cd7d744b 57