diff options
| author | Christian Vogel <vogelchr@vogel.cx> | 2010-10-04 20:10:42 +0200 |
|---|---|---|
| committer | Steve Markgraf <steve@steve-m.de> | 2011-01-02 16:43:25 +0100 |
| commit | 65b078fa20de57fd11f631ef3cf5073047322add (patch) | |
| tree | 030e31d0daad3e6ca3c9f6ffdea18838d86c2df3 | |
| parent | 897b41a90c4c3fd86563ccc3b1ad14c9041cae06 (diff) | |
Testing for the idle i2c bus was done backwards, we have
to wait for the bit to become 0, not 1.
| -rw-r--r-- | src/target/firmware/calypso/i2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/target/firmware/calypso/i2c.c b/src/target/firmware/calypso/i2c.c index a46fd72a..2231990b 100644 --- a/src/target/firmware/calypso/i2c.c +++ b/src/target/firmware/calypso/i2c.c @@ -52,7 +52,7 @@ enum i2c_reg { #define I2C_STATUS_ERROR_DATA (1 << 0) #define I2C_STATUS_ERROR_DEV (1 << 1) -#define I2C_STATUS_IDLE (1 << 2) +#define I2C_STATUS_IDLE (1 << 2) // 1: not idle, 0: idle #define I2C_STATUS_INTERRUPT (1 << 3) int i2c_write(uint8_t chip, uint32_t addr, int alen, const uint8_t *buffer, int len) @@ -92,7 +92,7 @@ int i2c_write(uint8_t chip, uint32_t addr, int alen, const uint8_t *buffer, int while (1) { uint8_t reg = readb(I2C_REG(STATUS_ACTIVITY_REG)); printd("I2C Status: 0x%02x\n", rerg & 0xf); - if (reg & I2C_STATUS_IDLE) + if (!(reg & I2C_STATUS_IDLE)) // 0: idle 1: not idle break; } dputs("I2C transfer completed\n"); |