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LPC1768: Allow I2C master channel override (#16584)

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This commit is contained in:
0r31
2020-01-20 06:59:06 +01:00
committed by Scott Lahteine
parent 0fcf2b1110
commit 451062553e
9 changed files with 142 additions and 378 deletions
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10
Marlin/src/feature/digipot/digipot_mcp4451.cpp
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@ -47,7 +47,7 @@ static byte current_to_wiper(const float current) {
return byte(CEIL(float((DIGIPOT_I2C_FACTOR * current))));
}
static void i2c_send(const byte addr, const byte a, const byte b) {
static void digipot_i2c_send(const byte addr, const byte a, const byte b) {
#if MB(MKS_SBASE)
digipot_mcp4451_start(addr);
digipot_mcp4451_send_byte(a);
@ -67,17 +67,17 @@ void digipot_i2c_set_current(const uint8_t channel, const float current) {
const byte addr = channel < 4 ? DIGIPOT_I2C_ADDRESS_A : DIGIPOT_I2C_ADDRESS_B; // channel 0-3 vs 4-7
// Initial setup
i2c_send(addr, 0x40, 0xFF);
i2c_send(addr, 0xA0, 0xFF);
digipot_i2c_send(addr, 0x40, 0xFF);
digipot_i2c_send(addr, 0xA0, 0xFF);
// Set actual wiper value
byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
i2c_send(addr, addresses[channel & 0x3], current_to_wiper(_MIN(float(_MAX(current, 0)), DIGIPOT_I2C_MAX_CURRENT)));
digipot_i2c_send(addr, addresses[channel & 0x3], current_to_wiper(_MIN(float(_MAX(current, 0)), DIGIPOT_I2C_MAX_CURRENT)));
}
void digipot_i2c_init() {
#if MB(MKS_SBASE)
digipot_mcp4451_init();
configure_i2c();
#else
Wire.begin();
#endif