From e60c470b426b7be08a33133e7d8c94201d7e96d4 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Tue, 11 Oct 2011 17:44:40 -0600 Subject: [PATCH] altos/avr: Pull-up on the SPI slave select pin This makes the board work even when disconnected from TeleMetrum. Signed-off-by: Keith Packard --- src/avr/ao_spi_slave.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/avr/ao_spi_slave.c b/src/avr/ao_spi_slave.c index 76f574c6..3aa0b97f 100644 --- a/src/avr/ao_spi_slave.c +++ b/src/avr/ao_spi_slave.c @@ -87,7 +87,7 @@ ao_spi_slave_init(void) (1 << 3) | /* MISO, output */ (0 << 2) | /* MOSI, no pull-up */ (0 << 1) | /* SCK, no pull-up */ - (0 << 0)); /* SS, no pull-up */ + (1 << 0)); /* SS, pull-up */ #endif #if SPI_SLAVE_PIN_2_5 PCMSK0 |= (1 << PCINT2); /* Enable PCINT2 pin change */ @@ -103,7 +103,7 @@ ao_spi_slave_init(void) (0 << 5) | /* SCK, no pull-up */ (1 << 4) | /* MISO, output */ (0 << 3) | /* MOSI, no pull-up */ - (0 << 2)); /* SS, no pull-up */ + (1 << 2)); /* SS, pull-up */ #endif SPCR = (0 << SPIE) | /* Disable SPI interrupts */ -- 2.30.2