static I2CAdapter *i2c;
static uint8_t addr;
-static void send_and_receive(void)
+static uint16_t tmp105_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
{
- uint8_t cmd[3];
uint8_t resp[2];
-
- cmd[0] = TMP105_REG_TEMPERATURE;
- i2c_send(i2c, addr, cmd, 1);
+ i2c_send(i2c, addr, ®, 1);
i2c_recv(i2c, addr, resp, 2);
- g_assert_cmpuint(((uint16_t)resp[0] << 8) | resp[1], ==, 0);
+ return (resp[0] << 8) | resp[1];
+}
+
+static void tmp105_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
+ uint8_t value)
+{
+ uint8_t cmd[2];
+ uint8_t resp[1];
- cmd[0] = TMP105_REG_CONFIG;
- cmd[1] = 0x0; /* matches the reset value */
+ cmd[0] = reg;
+ cmd[1] = value;
i2c_send(i2c, addr, cmd, 2);
i2c_recv(i2c, addr, resp, 1);
g_assert_cmphex(resp[0], ==, cmd[1]);
+}
- cmd[0] = TMP105_REG_T_LOW;
- cmd[1] = 0x12;
- cmd[2] = 0x34;
- i2c_send(i2c, addr, cmd, 3);
- i2c_recv(i2c, addr, resp, 2);
- g_assert_cmphex(resp[0], ==, cmd[1]);
- g_assert_cmphex(resp[1], ==, cmd[2]);
+static void tmp105_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
+ uint16_t value)
+{
+ uint8_t cmd[3];
+ uint8_t resp[2];
- cmd[0] = TMP105_REG_T_HIGH;
- cmd[1] = 0x42;
- cmd[2] = 0x31;
+ cmd[0] = reg;
+ cmd[1] = value >> 8;
+ cmd[2] = value & 255;
i2c_send(i2c, addr, cmd, 3);
i2c_recv(i2c, addr, resp, 2);
g_assert_cmphex(resp[0], ==, cmd[1]);
g_assert_cmphex(resp[1], ==, cmd[2]);
}
+
+static void send_and_receive(void)
+{
+ uint16_t value;
+
+ value = tmp105_get16(i2c, addr, TMP105_REG_TEMPERATURE);
+ g_assert_cmpuint(value, ==, 0);
+
+ /* reset */
+ tmp105_set8(i2c, addr, TMP105_REG_CONFIG, 0);
+
+ tmp105_set16(i2c, addr, TMP105_REG_T_LOW, 0x1234);
+ tmp105_set16(i2c, addr, TMP105_REG_T_HIGH, 0x4231);
+}
+
int main(int argc, char **argv)
{
QTestState *s = NULL;