EMTime/libopencm3-examples
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Update to current master library

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can fixes are compile tested only.  I don't have those boards.
f3 i2c is tested on i2c and gives the same results
l1 low power demo seems to have been broken for some time already.
 => should be fixed, but not something I'm going to work on right now.
This commit is contained in:
Karl Palsson
2017-09-01 23:19:46 +00:00
parent d6876b1f77
commit f368819e81
7 changed files with 43 additions and 44 deletions
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37
examples/stm32/f3/stm32f3-discovery/i2c/i2c.c
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@@ -54,14 +54,13 @@ static void i2c_setup(void)
i2c_reset(I2C1);
/* Setup GPIO pin GPIO_USART2_TX/GPIO9 on GPIO port A for transmit. */
gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO6 | GPIO7);
gpio_set_af(GPIOB, GPIO_AF4, GPIO6| GPIO7);
gpio_set_af(GPIOB, GPIO_AF4, GPIO6 | GPIO7);
i2c_peripheral_disable(I2C1);
//configure ANFOFF DNF[3:0] in CR1
i2c_enable_analog_filter(I2C1);
i2c_set_digital_filter(I2C1, I2C_CR1_DNF_DISABLED);
//Configure PRESC[3:0] SDADEL[3:0] SCLDEL[3:0] SCLH[7:0] SCLL[7:0]
// in TIMINGR
i2c_100khz_i2cclk8mhz(I2C1);
/* HSI is at 8Mhz */
i2c_set_speed(I2C1, i2c_speed_sm_100k, 8);
//configure No-Stretch CR1 (only relevant in slave mode)
i2c_enable_stretching(I2C1);
//addressing mode
@@ -134,9 +133,6 @@ static void clock_setup(void)
#define ACC_OUT_X_L_A 0x28
#define ACC_OUT_X_H_A 0x29
// gpio_port_write(GPIOE, (I2C_ISR(i2c) & 0xFF) << 8);
// my_usart_print_int(USART2, (I2C_ISR(i2c) & 0xFF));
int main(void)
{
clock_setup();
@@ -144,25 +140,24 @@ int main(void)
usart_setup();
printf("Hello, we're running\n");
i2c_setup();
/*uint8_t data[1]={(0x4 << ACC_CTRL_REG1_A_ODR_SHIFT) | ACC_CTRL_REG1_A_XEN};*/
uint8_t data[1]={0x97};
write_i2c(I2C1, I2C_ACC_ADDR, ACC_CTRL_REG1_A, 1, data);
data[0]=0x08;
write_i2c(I2C1, I2C_ACC_ADDR, ACC_CTRL_REG4_A, 1, data);
uint8_t cmd = ACC_CTRL_REG1_A;
uint8_t data;
i2c_transfer7(I2C1, I2C_ACC_ADDR, &cmd, 1, &data, 1);
cmd = ACC_CTRL_REG4_A;
i2c_transfer7(I2C1, I2C_ACC_ADDR, &cmd, 1, &data, 1);
int16_t acc_x;
while (1) {
read_i2c(I2C1, I2C_ACC_ADDR, ACC_STATUS, 1, data);
/*my_usart_print_int(USART2, data[0]);*/
read_i2c(I2C1, I2C_ACC_ADDR, ACC_OUT_X_L_A, 1, data);
acc_x=data[0];
read_i2c(I2C1, I2C_ACC_ADDR, ACC_OUT_X_H_A, 1, data);
acc_x|=(data[0] << 8);
cmd = ACC_STATUS;
i2c_transfer7(I2C1, I2C_ACC_ADDR, &cmd, 1, &data, 1);
cmd = ACC_OUT_X_L_A;
i2c_transfer7(I2C1, I2C_ACC_ADDR, &cmd, 1, &data, 1);
acc_x = data;
cmd = ACC_OUT_X_H_A;
i2c_transfer7(I2C1, I2C_ACC_ADDR, &cmd, 1, &data, 1);
acc_x |= ((uint16_t)data << 8);
printf("data was %d\n", acc_x);
//int i;
//for (i = 0; i < 800000; i++) /* Wait a bit. */
// __asm__("nop");
}
return 0;