diff options
| author | Daniel Friesel <derf@finalrewind.org> | 2018-10-24 10:20:19 +0200 |
|---|---|---|
| committer | Daniel Friesel <derf@finalrewind.org> | 2018-10-24 10:20:19 +0200 |
| commit | f6c24bc802f2cb5ec959a768b60dadc957f113cb (patch) | |
| tree | 7052d5ad788702893e6002b3107dcd1883eeab0b /src/arch/msp430fr5969lp/driver | |
| parent | 7dac0cccc846d4452293b47b40d43f6b50ebcc33 (diff) | |
I2C: Add support for manual / always-on gpio pullups
Diffstat (limited to 'src/arch/msp430fr5969lp/driver')
| -rw-r--r-- | src/arch/msp430fr5969lp/driver/i2c.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/arch/msp430fr5969lp/driver/i2c.cc b/src/arch/msp430fr5969lp/driver/i2c.cc index 5a47770..cb6fa79 100644 --- a/src/arch/msp430fr5969lp/driver/i2c.cc +++ b/src/arch/msp430fr5969lp/driver/i2c.cc @@ -10,6 +10,10 @@ volatile unsigned short old_ifg = 0; signed char I2C::setup() { +#ifdef I2C_PULLUP_FIXED_GPIO + P1DIR |= BIT4 | BIT5; + P1OUT |= BIT4 | BIT5; +#endif UCB0CTL1 = UCSWRST; UCB0CTLW0 = UCMODE_3 | UCMST | UCSYNC | UCSSEL_2 | UCSWRST | UCCLTO_1; UCB0BRW = (F_CPU / F_I2C) - 1; |