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- Wed Jan 08, 2020 8:17 pm
- Forum: ESP-IDF
- Topic: SIM800 TTGO TCALL pppos_client
- Replies: 11
- Views: 13820
Re: SIM800 TTGO TCALL pppos_client
CONFIG_MODEM_TX_PIN=27 CONFIG_MODEM_RX_PIN=26 Power up sequence that works for me ... gpio_set_direction(MODEM_PWKEY, GPIO_MODE_OUTPUT); gpio_set_direction(MODEM_RST, GPIO_MODE_OUTPUT); gpio_set_direction(MODEM_POWER_ON, GPIO_MODE_OUTPUT); gpio_set_level(MODEM_PWKEY, LOW); gpio_set_level(MODEM_RST, ...