[WIP] Voice IND

[osmocom-bb.git] / src / target / firmware / calypso / i2c.c

diff --git a/src/target/firmware/calypso/i2c.c b/src/target/firmware/calypso/i2c.c
index a46fd72..344424d 100644 (file)
--- 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)
@@ -72,7 +72,7 @@ int i2c_write(uint8_t chip, uint32_t addr, int alen, const uint8_t *buffer, int
        writeb(chip & 0x3f, I2C_REG(DEVICE_REG));
        writeb(addr & 0xff, I2C_REG(ADDRESS_REG));
        
-       /* we have to tell the controler how many bits we'll put into the fifo ?!? */
+       /* we have to tell the controller how many bits we'll put into the fifo ?!? */
        writeb(len-1, I2C_REG(CONF_FIFO_REG));
 
        /* fill the FIFO */
@@ -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");