annotate src/cs/drivers/drv_core/armio/armio.h @ 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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1 /*
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2 * ARMIO.H * * Control diagnostic bits * * Reference : GCS207 *
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3 */
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4
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5 #include "chipset.cfg"
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7 #include "l1sw.cfg"
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8
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9 #if (OP_L1_STANDALONE == 0)
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10 #include "main/sys_types.h"
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11 #else
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12 #include "sys_types.h"
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13 #endif
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16 // Duplicate address with ARMIO_IO_CNTL
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17 // Need to investigate !!!
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18 //#define ARMIO_CNTL (MEM_ARMIO + 0x04) /* I/O control */
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19
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20 #define ARMIO_IN (MEM_ARMIO + 0x00) /* inputs */
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21 #define ARMIO_OUT (MEM_ARMIO + 0x02) /* outputs */
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22 #define ARMIO_IO_CNTL (MEM_ARMIO + 0x04) /* I/O control */
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23 #define ARMIO_CNTL_REG (MEM_ARMIO + 0x06) /* control ARMIO */
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24 #define ARMIO_LOAD_TIM (MEM_ARMIO + 0x08) /* load TIM */
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25 #if (CHIPSET != 12)
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26 #define ARMIO_KBR_IN (MEM_ARMIO + 0x0A) /* KBR inputs (rows) */
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27 #define ARMIO_KBR_OUT (MEM_ARMIO + 0x0C) /* KBR outputs (columns) */
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28 #endif
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29 #define ARMIO_PWM_CNTL (MEM_ARMIO + 0x0E) /* LIGHT/BUZZER control */
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30 #define ARMIO_LIGHT (MEM_ARMIO + 0x10) /* light value */
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31 #define ARMIO_BUZZER (MEM_ARMIO + 0x12) /* buzzer value */
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32 #define ARMIO_CLOCKEN 0x0020
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33 #if (CHIPSET != 12)
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34 #define CLKM_IO_CNTL MEM_IO_SEL /* control IO */
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35 #endif
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36
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37 #if (CHIPSET == 12)
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38 #define GPIO_INTERRUPT_LEVEL_REG * (volatile SYS_UWORD16 *) (MEM_ARMIO + 0x16)
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39 #define GPIO_INTERRUPT_MASK_REG * (volatile SYS_UWORD16 *) (MEM_ARMIO + 0x18)
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40 #else
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41 #define ARMIO_GPIO_EVENT_MODE (MEM_ARMIO + 0x14) /* GPIO event mode */
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42 #define ARMIO_KBD_GPIO_INT (MEM_ARMIO + 0x16) /* Kbd/GPIO IRQ register */
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43 #define ARMIO_KBD_GPIO_MASKIT (MEM_ARMIO + 0x18) /* Kbd/GPIO mask IRQ */
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44 // CC test 0316
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45 #define ARMIO_GPIO_DEBOUNCE (MEM_ARMIO + 0x1A) /* GPIO debounceing register*/
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46 // end
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47 #endif
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49
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50 #if (CHIPSET != 12)
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51 #define ARMIO_DCD (2) /* IO used for DCD on C-Sample - Output */
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52 #endif
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53 #define ARMIO_DTR (3) /* IO used for DTR on C-Sample - Input */
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54
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55 #define ARMIO_FALLING_EDGE (0)
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56 #define ARMIO_RISING_EDGE (1)
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57
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58 #if (CHIPSET != 12)
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59 #define ARMIO_KEYPDAD_INT (0x0001)
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60 #define ARMIO_GPIO_INT (0x0002)
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61
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62 #define ARMIO_MASKIT_KBD (0x0001)
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63 #define ARMIO_MASKIT_GPIO (0x0002)
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64
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65 void AI_EnableBit(int bit);
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66 void AI_DisableBit(int bit);
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67 #endif
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68 void AI_SetBit(int bit);
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69 void AI_ResetBit(int bit);
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70 void AI_ConfigBitAsOutput(int bit);
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71 void AI_ConfigBitAsInput(int bit);
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72 SYS_BOOL AI_ReadBit(int bit);
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73 void AI_SetSimIO3V(SYS_UWORD8 StdOutput);
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74
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75 #if (OP_L1_STANDALONE == 0)
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76 void AI_Power(SYS_UWORD8 power);
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77 #endif
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78
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79 void AI_ResetTspIO(void);
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80 void AI_ResetDbgReg(void);
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81 void AI_ResetIoConfig(void);
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82 void AI_InitIOConfig(void);
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83 void AI_ClockEnable (void);
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84
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85 void AI_SelectIOForIT (SYS_UWORD16 Pin, SYS_UWORD16 Edge);
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86 #if (CHIPSET != 12)
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87 int AI_CheckITSource (SYS_UWORD16 Source);
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88 #endif
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89 void AI_UnmaskIT (SYS_UWORD16 Source);
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90 void AI_MaskIT (SYS_UWORD16 Source);
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91