FreeCalypso > hg > fc-magnetite
view src/cs/services/atp/atp_uart_api.c @ 629:3231dd9b38c1
armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets
Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively,
and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code
for C-Sample and earlier turns them into GPIOs configured as outputs also
driving 1 - so far, so good - but TI's code for BOARD 41 (which covers
D-Sample, Leonardo and all real world Calypso devices derived from the
latter) switches them from MCUEN to GPIOs, but then leaves them as inputs.
Given that the hardware powerup state of these two pins is outputs driving 1,
every Calypso board design MUST be compatible with such driving; typically
these GPIO signals will be either unused and unconnected or connected as
outputs driving some peripheral. Turning these pins into GPIO inputs will
result in floating inputs on every reasonably-wired board, thus I am
convinced that this configuration is nothing but a bug on the part of
whoever wrote this code at TI.
This floating input bug had already been fixed earlier for GTA modem and
FCDEV3B targets; the present change makes the fix unconditional for all
"classic" targets. The newly affected targets are D-Sample, Leonardo,
Tango and GTM900.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 02 Jan 2020 05:38:26 +0000 |
| parents | 945cf7f506b2 |
| children |
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/********************************************************************************/ /* */ /* File Name: atp_uart_api.c */ /* */ /* Purpose: This file contains the external functions related to */ /* the ATP-UART interface. */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 10/04/01 Pascal Pompei */ /* - Create. */ /* */ /* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved. */ /* */ /********************************************************************************/ #include "atp/atp_uart_i.h" #include "rvm/rvm_use_id_list.h" /********************************************************************************/ /* */ /* Function Name: atp_uart_open_com_port */ /* */ /* Purpose: This function instructs the ATP-UART interface to open */ /* the COM port. */ /* */ /* Input Parameters: */ /* com_port - Contains the COM port number. */ /* baud_rate - Contains the baud rate (in bits per second). */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 10/04/01 Pascal Pompei */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_open_com_port (T_ATP_UART_COM_PORT com_port, T_ATP_UART_BAUD_RATE baud_rate) { /* Declare a local variable. */ T_ATP_UART_OPEN_COM_PORT *open_com_port_p = NULL; /******************** atp_uart_open_com_port function begins ********************/ /* Allocate memory required to instruct the ATP-UART interface to open the */ /* COM port. If insufficient resources, then report an internal memory */ /* error and abort. */ if (rvf_get_buf (gbl_atp_uart_ctrl_blk_p->mb_id, \ sizeof (T_ATP_UART_OPEN_COM_PORT), \ (T_RVF_BUFFER **) (&open_com_port_p)) == RVF_RED) { rvf_send_trace (" ATP-UART (api). Insufficient resources ", 41, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); return (RV_MEMORY_ERR); } /* Fill the 'ATP-UART Open COM Port' header up. */ (open_com_port_p->os_header).msg_id = ATP_UART_OPEN_COM_PORT; (open_com_port_p->os_header).src_addr_id = RVF_INVALID_ADDR_ID; (open_com_port_p->os_header).callback_func = NULL; /* Fill the 'ATP-UART Open COM Port' payload up. */ open_com_port_p->com_port = com_port; open_com_port_p->baud_rate = baud_rate; /* Send the 'ATP-UART Open COM Port' notification to the ATP-UART */ /* interface. */ return (rvf_send_msg (gbl_atp_uart_ctrl_blk_p->addr_id, \ open_com_port_p)); } /******************* End of atp_uart_open_com_port function *******************/ /********************************************************************************/ /* */ /* Function Name: atp_uart_start_gsm */ /* */ /* Purpose: This function instructs the ATP-UART interface to */ /* initiate using the GSM protocol stack. */ /* */ /* Input Parameters: None. */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Note: The GSM protocol stack is initialized by invoking the */ /* following AT commands: */ /* AT+CFUN=1 : Set Phone Functionality (Full), */ /* AT+COPS=0 : Operator Selection. */ /* */ /* Revision History: */ /* 09/26/02 Pascal Pompei */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_start_gsm (void) { /* Declare a local variable. */ T_ATP_UART_START_GSM *start_gsm_p = NULL; /********************** atp_uart_start_gsm function begins **********************/ /* Allocate memory required to instruct the ATP-UART interface to initiate */ /* using the GSM protocol stack. If insufficient resources, then report an */ /* internal memory error and abort. */ if (rvf_get_buf (gbl_atp_uart_ctrl_blk_p->mb_id, \ sizeof (T_ATP_UART_START_GSM), \ (T_RVF_BUFFER **) (&start_gsm_p)) == RVF_RED) { rvf_send_trace (" ATP-UART (api). Insufficient resources ", 41, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); return (RV_MEMORY_ERR); } /* Fill the 'ATP-UART Start GSM' header up. */ (start_gsm_p->os_header).msg_id = ATP_UART_START_GSM; (start_gsm_p->os_header).src_addr_id = RVF_INVALID_ADDR_ID; (start_gsm_p->os_header).callback_func = NULL; /* Send the 'ATP-UART Start GSM' notification to the ATP-UART interface. */ return (rvf_send_msg (gbl_atp_uart_ctrl_blk_p->addr_id, \ start_gsm_p)); } /********************* End of atp_uart_start_gsm function *********************/