static void pins_to_default(nrfx_uart_t const * p_instance)
{
/* Reset pins to default states */
uint32_t txd;
uint32_t rxd;
uint32_t rts;
uint32_t cts;
txd = nrf_uart_tx_pin_get(p_instance->p_reg);
rxd = nrf_uart_rx_pin_get(p_instance->p_reg);
rts = nrf_uart_rts_pin_get(p_instance->p_reg);
cts = nrf_uart_cts_pin_get(p_instance->p_reg);
nrf_uart_txrx_pins_disconnect(p_instance->p_reg);
nrf_uart_hwfc_pins_disconnect(p_instance->p_reg);
if (txd != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(txd);
}
if (rxd != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(rxd);
}
if (cts != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(cts);
}
if (rts != NRF_UART_PSEL_DISCONNECTED)
{
nrf_gpio_cfg_default(rts);
}
}
// Set the pin state
void jshPinSetState(Pin pin, JshPinState state) {
/* Make sure we kill software PWM if we set the pin state
* after we've started it */
if (BITFIELD_GET(jshPinSoftPWM, pin)) {
BITFIELD_SET(jshPinSoftPWM, pin, 0);
jstPinPWM(0,0,pin);
}
uint32_t ipin = (uint32_t)pinInfo[pin].pin;
switch (state) {
case JSHPINSTATE_UNDEFINED :
nrf_gpio_cfg_default(ipin);
break;
case JSHPINSTATE_GPIO_OUT :
nrf_gpio_cfg_output(ipin);
break;
case JSHPINSTATE_GPIO_OUT_OPENDRAIN :
NRF_GPIO->PIN_CNF[ipin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
| (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos)
| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
| (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
| (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
break;
case JSHPINSTATE_GPIO_IN :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_NOPULL);
break;
case JSHPINSTATE_GPIO_IN_PULLUP :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_PULLUP);
break;
case JSHPINSTATE_GPIO_IN_PULLDOWN :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_PULLDOWN);
break;
/*case JSHPINSTATE_ADC_IN :
break;
case JSHPINSTATE_AF_OUT :
break;
case JSHPINSTATE_AF_OUT_OPENDRAIN :
break;
case JSHPINSTATE_USART_IN :
break;
case JSHPINSTATE_USART_OUT :
break;
case JSHPINSTATE_DAC_OUT :
break;*/
case JSHPINSTATE_I2C :
NRF_GPIO->PIN_CNF[ipin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
| (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos)
| (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos)
| (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
| (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
// may need to be set to GPIO_PIN_CNF_DIR_Output as well depending on I2C state?
break;
default : assert(0);
break;
}
}
// Set the pin state
void jshPinSetState(Pin pin, JshPinState state) {
uint32_t ipin = (uint32_t)pinInfo[pin].pin;
switch (state) {
case JSHPINSTATE_UNDEFINED :
nrf_gpio_cfg_default(ipin);
break;
case JSHPINSTATE_GPIO_OUT :
nrf_gpio_cfg_output(ipin);
break;
case JSHPINSTATE_GPIO_OUT_OPENDRAIN :
NRF_GPIO->PIN_CNF[ipin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
| (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos)
| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
| (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
| (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
break;
case JSHPINSTATE_GPIO_IN :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_NOPULL);
break;
case JSHPINSTATE_GPIO_IN_PULLUP :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_PULLUP);
break;
case JSHPINSTATE_GPIO_IN_PULLDOWN :
nrf_gpio_cfg_input(ipin, NRF_GPIO_PIN_PULLDOWN);
break;
/*case JSHPINSTATE_ADC_IN :
break;
case JSHPINSTATE_AF_OUT :
break;
case JSHPINSTATE_AF_OUT_OPENDRAIN :
break;
case JSHPINSTATE_USART_IN :
break;
case JSHPINSTATE_USART_OUT :
break;
case JSHPINSTATE_DAC_OUT :
break;*/
case JSHPINSTATE_I2C :
NRF_GPIO->PIN_CNF[ipin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
| (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos)
| (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos)
| (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
| (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
// may need to be set to GPIO_PIN_CNF_DIR_Output as well depending on I2C state?
break;
default : assert(0);
break;
}
}
void nrfx_twim_uninit(nrfx_twim_t const * p_instance)
{
twim_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];
NRFX_ASSERT(p_cb->state != NRFX_DRV_STATE_UNINITIALIZED);
if (p_cb->handler)
{
NRFX_IRQ_DISABLE(nrfx_get_irq_number(p_instance->p_twim));
}
nrfx_twim_disable(p_instance);
#if NRFX_CHECK(NRFX_PRS_ENABLED)
nrfx_prs_release(p_instance->p_twim);
#endif
if (!p_cb->hold_bus_uninit)
{
nrf_gpio_cfg_default(p_instance->p_twim->PSEL.SCL);
nrf_gpio_cfg_default(p_instance->p_twim->PSEL.SDA);
}
p_cb->state = NRFX_DRV_STATE_UNINITIALIZED;
NRFX_LOG_INFO("Instance uninitialized: %d.", p_instance->drv_inst_idx);
}
/**
* @brief Function for main application entry.
*/
int main(void)
{
ret_code_t ret_code;
nrf_gpio_cfg_output(LED_1);
nrf_gpio_pin_set(LED_1);
nrf_gpio_cfg_output(LED_2);
nrf_gpio_pin_set(LED_2);
uart_config();
printf("\033[2J\033[;H\r\n* Example to find TWI devices connected to \r\n* the TWI bus and their addresses\r\n\r\n");
twi_init();
uint8_t dummy_data = 0x55;
// Itterate through all possible 7-bit TWI addresses
for(uint8_t i = 0; i <= 0x7F; i++)
{
device_address = i;
// Send dummy data. If a device is present on this particular address a TWI EVT_DONE event is
// received in the twi event handler and a message is printed to UART
ret_code = nrf_drv_twi_tx(&twi_instance, i, &dummy_data, 1, false);
APP_ERROR_CHECK(ret_code);
// Delay 10 ms to allow TWI transfer to complete and UART to print messages before starting new transfer
nrf_delay_ms(10);
}
if(device_found)
{
// Blinke LED_1 rapidly if device is found
while(true)
{
nrf_gpio_pin_toggle(LED_1);
nrf_delay_ms(1000);
}
}
else
{
// Disable LED_1 if device is NOT found
nrf_gpio_cfg_default(LED_1);
printf("*****************\n\rNO DEVICES FOUND!\r\n*****************\n\r");
while(true)
{
nrf_gpio_pin_toggle(LED_2);
nrf_delay_ms(100);;
}
}
}
void nrf_utils_gpio_pin_set_state(uint32_t pin, uint32_t state)
{
switch (state)
{
case 0 :
nrf_gpio_cfg_default(pin);
break;
case 1 :
nrf_gpio_cfg_output(pin);
break;
case 2 :
nrf_gpio_cfg_output(pin);
break;
case 3 :
nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_NOPULL);
break;
case 4 :
nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_PULLUP);
break;
case 5 :
nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_PULLDOWN);
break;
case 6 :
break;
case 7 :
break;
case 8 :
break;
case 9 :
break;
case 10 :
break;
case 11 :
break;
case 12 :
break;
case 13 ://wrong...
break;
case 14 : //wrong...
break;
default :
break;
}
}
void jswrap_microbit_stopDisplay() {
if (microbitLEDState) {
jstStopExecuteFn(jswrap_microbit_display_callback);
microbitLEDState = 0;
nrf_gpio_cfg_default(MB_LED_COL1);
nrf_gpio_cfg_default(MB_LED_COL2);
nrf_gpio_cfg_default(MB_LED_COL3);
nrf_gpio_cfg_default(MB_LED_COL4);
nrf_gpio_cfg_default(MB_LED_COL5);
nrf_gpio_cfg_default(MB_LED_COL6);
nrf_gpio_cfg_default(MB_LED_COL7);
nrf_gpio_cfg_default(MB_LED_COL8);
nrf_gpio_cfg_default(MB_LED_COL9);
nrf_gpio_cfg_default(MB_LED_ROW1);
nrf_gpio_cfg_default(MB_LED_ROW2);
nrf_gpio_cfg_default(MB_LED_ROW3);
}
}
