Kazuki Yamamoto
UART to I2C master(s) converter, targetting to emulate SC18IM700(NXP) chip
UART to I2C master(s) converter, targetting to emulate SC18IM700(NXP) chip
Features
up to 4x I2C master
- for LPC824 implement, we can use up to 4 channels of I2C masters
- 1x Fm+ and 3x Fm I2C channels
- for LPC1768 implement, we can use up to 2 channels of I2C masters
- 2x Fm I2C channels
- for LPC11U35 implement, only one channel for I2C master,
but program uses USB CDC class for UART communication (means no external USB-Serial converter chip)
- 1x Fm+ I2C channels
1x SPI master
up to 2x 8bit GPIO
Tested Platforms
LPC824
- https://developer.mbed.org/platforms/Switch-Science-mbed-LPC824/
- https://developer.mbed.org/platforms/LPCXpresso824-MAX/
LPC1768
LPC11U35
Quote:
LPC11U35 implement requires importing USBDevice library to use USBSerial class
visit https://github.com/K4zuki/tinyI2C for more information
Diff: tinyI2C_824.h
- Revision:
- 42:da85c17ea495
- Child:
- 76:fcbc456010e0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tinyI2C_824.h Tue Aug 30 16:30:55 2016 +0000 @@ -0,0 +1,53 @@ +/* +tinyI2C_824.h +*/ + +static const uint8_t chip_id = ID_LPC824; +#define isI2C1 // unused(always enabled) +I2C dev1(I2C_SDA, I2C_SCL);//11,10 hard coded, 220 ohm pull-up + +#define isI2C2 +#define isI2C3 +#define isI2C4 + +#define isUART +#undef isUSBUART + +#define isHWSPI +#undef isSWSPI + +#define isGPIO0 // unused(always enabled) +#undef isGPIO1 + +#if defined(TARGET_SSCI824) + Serial pc(P0_4, P0_0); + I2C dev2(P0_16, P0_27); + I2C dev3(P0_26, P0_25); + I2C dev4(P0_24, P0_15); + SPI _spi(P0_6, P0_7, P0_13); // mosi, miso, sclk + DigitalOut _cs(P0_1); // CS + DigitalInOut _GPIO00(P0_17); + DigitalInOut _GPIO01(P0_18); + DigitalInOut _GPIO02(P0_19); + DigitalInOut _GPIO03(P0_20); + DigitalInOut _GPIO04(P0_21); + DigitalInOut _GPIO05(P0_22); + DigitalInOut _GPIO06(P0_23); + DigitalInOut _GPIO07(P0_14); +#elif defined(TARGET_LPC824) + Serial pc(USBTX,USBRX); // P0_7, P0_18 + I2C dev2(P0_6, P0_14); // 6,14 | A0, A1 + I2C dev3(P0_23, P0_22); // 23,22 | A2, A3 + I2C dev4(P0_21, P0_20); // 21,20 | A4, A5 + SPI _spi(P0_26,P0_25,P0_24); // mosi, miso, sclk, D11, D12, D13 + DigitalOut _cs(P0_15); // CS, D10 + DigitalInOut _GPIO00(P0_19); // D2 + DigitalInOut _GPIO01(P0_12); // D3 + DigitalInOut _GPIO02(P0_18); // D4 + DigitalInOut _GPIO03(P0_28); // D5 + DigitalInOut _GPIO04(P0_16); // D6 + DigitalInOut _GPIO05(P0_17); // D7 + DigitalInOut _GPIO06(P0_13); // D8 + DigitalInOut _GPIO07(P0_27); // D9 +#endif +