void jshI2CRead(IOEventFlags device, unsigned char address, int nBytes, unsigned char *data, bool sendStop) {
const nrf_drv_twi_t *twi = jshGetTWI(device);
if (!twi) return;
uint32_t err_code = nrf_drv_twi_rx(twi, address, data, nBytes);
if (err_code != NRF_SUCCESS)
jsExceptionHere(JSET_INTERNALERROR, "I2C Read Error %d\n", err_code);
}
/** Set up I2C, if pins are -1 they will be guessed */
void jshI2CSetup(IOEventFlags device, JshI2CInfo *inf) {
NRF_TWI_Type *twi = jshGetTWI(device);
// jshPinSetState
// nrf_twi_frequency_set(twi, inf->bitrate);
// nrf_twi_pins_set(twi, pinInfo[inf->pinSCL].pin, pinInfo[inf->pinSDA].pin);
// nrf_twi_enable
}
/** Set up I2C, if pins are -1 they will be guessed */
void jshI2CSetup(IOEventFlags device, JshI2CInfo *inf) {
if (!jshIsPinValid(inf->pinSCL) || !jshIsPinValid(inf->pinSDA)) {
jsError("SDA and SCL pins must be valid, got %d and %d\n", inf->pinSDA, inf->pinSCL);
return;
}
const nrf_drv_twi_t *twi = jshGetTWI(device);
if (!twi) return;
// http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk51.v9.0.0%2Fhardware_driver_twi.html&cp=4_1_0_2_10
nrf_drv_twi_config_t p_twi_config;
p_twi_config.scl = (uint32_t)pinInfo[inf->pinSCL].pin;
p_twi_config.sda = (uint32_t)pinInfo[inf->pinSDA].pin;
p_twi_config.frequency = (inf->bitrate<175000) ? NRF_TWI_FREQ_100K : ((inf->bitrate<325000) ? NRF_TWI_FREQ_250K : NRF_TWI_FREQ_400K);
p_twi_config.interrupt_priority = APP_IRQ_PRIORITY_LOW;
if (twi1Initialised) nrf_drv_twi_uninit(twi);
twi1Initialised = true;
uint32_t err_code = nrf_drv_twi_init(twi, &p_twi_config, NULL, NULL);
if (err_code != NRF_SUCCESS)
jsExceptionHere(JSET_INTERNALERROR, "I2C Initialisation Error %d\n", err_code);
else
nrf_drv_twi_enable(twi);
}
/** Addresses are 7 bit - that is, between 0 and 0x7F. sendStop is whether to send a stop bit or not */
void jshI2CWrite(IOEventFlags device, unsigned char address, int nBytes, const unsigned char *data, bool sendStop) {
NRF_TWI_Type *twi = jshGetTWI(device);
// nrf_twi_address_set(twi, address);
}
