segatools/board/sg-led.c
Tau 1630784c3d board/sg-led.c: Implement RGB LED support
Used by AiMe reader, possibly used elsewhere.
2018-11-20 20:33:17 -05:00

185 lines
4.0 KiB
C

#include <windows.h>
#include <assert.h>
#include "board/sg-cmd.h"
#include "board/sg-led.h"
#include "board/sg-led-cmd.h"
#include "util/dprintf.h"
static HRESULT sg_led_dispatch(
void *ctx,
const void *v_req,
void *v_resp);
static HRESULT sg_led_cmd_reset(
const struct sg_led *led,
const struct sg_req_header *req,
struct sg_led_resp_reset *resp);
static HRESULT sg_led_cmd_get_info(
const struct sg_led *led,
const struct sg_req_header *req,
struct sg_led_resp_get_info *resp);
static HRESULT sg_led_cmd_set_color(
const struct sg_led *led,
const struct sg_led_req_set_color *req);
static const uint8_t sg_led_info[] = {
'1', '5', '0', '8', '4', 0xFF, 0x10, 0x00, 0x12,
};
void sg_led_init(
struct sg_led *led,
uint8_t addr,
const struct sg_led_ops *ops,
void *ctx)
{
assert(led != NULL);
assert(ops != NULL);
led->ops = ops;
led->ops_ctx = ctx;
led->addr = addr;
}
void sg_led_transact(
struct sg_led *led,
struct iobuf *resp_frame,
const void *req_bytes,
size_t req_nbytes)
{
assert(led != NULL);
assert(resp_frame != NULL);
assert(req_bytes != NULL);
sg_req_transact(resp_frame, req_bytes, req_nbytes, sg_led_dispatch, led);
}
#ifdef NDEBUG
#define sg_led_dprintfv(led, fmt, ap)
#define sg_led_dprintf(led, fmt, ...)
#else
static void sg_led_dprintfv(
const struct sg_led *led,
const char *fmt,
va_list ap)
{
dprintf("RGB LED %02x: ", led->addr);
dprintfv(fmt, ap);
}
static void sg_led_dprintf(
const struct sg_led *led,
const char *fmt,
...)
{
va_list ap;
va_start(ap, fmt);
sg_led_dprintfv(led, fmt, ap);
va_end(ap);
}
#endif
static HRESULT sg_led_dispatch(
void *ctx,
const void *v_req,
void *v_resp)
{
const struct sg_led *led;
const union sg_led_req_any *req;
union sg_led_resp_any *resp;
led = ctx;
req = v_req;
resp = v_resp;
if (req->simple.hdr.addr != led->addr) {
/* Not addressed to us, don't send a response */
return S_FALSE;
}
switch (req->simple.hdr.cmd) {
case SG_RGB_CMD_RESET:
return sg_led_cmd_reset(led, &req->simple, &resp->reset);
case SG_RGB_CMD_GET_INFO:
return sg_led_cmd_get_info(led, &req->simple, &resp->get_info);
case SG_RGB_CMD_SET_COLOR:
return sg_led_cmd_set_color(led, &req->set_color);
default:
sg_led_dprintf(led, "Unimpl command %02x\n", req->simple.hdr.cmd);
return E_NOTIMPL;
}
}
static HRESULT sg_led_cmd_reset(
const struct sg_led *led,
const struct sg_req_header *req,
struct sg_led_resp_reset *resp)
{
HRESULT hr;
sg_led_dprintf(led, "Reset\n");
sg_resp_init(&resp->resp, req, sizeof(resp->payload));
resp->payload = 0;
if (led->ops->reset != NULL) {
hr = led->ops->reset(led->ops_ctx);
} else {
hr = S_OK;
}
if (FAILED(hr)) {
sg_led_dprintf(led, "led->ops->reset: Error %x\n", hr);
return hr;
}
return S_OK;
}
static HRESULT sg_led_cmd_get_info(
const struct sg_led *led,
const struct sg_req_header *req,
struct sg_led_resp_get_info *resp)
{
sg_led_dprintf(led, "Get info\n");
sg_resp_init(&resp->resp, req, sizeof(resp->payload));
memcpy(resp->payload, sg_led_info, sizeof(sg_led_info));
return S_OK;
}
static HRESULT sg_led_cmd_set_color(
const struct sg_led *led,
const struct sg_led_req_set_color *req)
{
HRESULT hr;
if (req->req.payload_len != sizeof(req->payload)) {
sg_led_dprintf(led, "%s: Payload size is incorrect\n", __func__);
goto fail;
}
hr = led->ops->set_color(
led->ops_ctx,
req->payload[0],
req->payload[1],
req->payload[2]);
if (FAILED(hr)) {
sg_led_dprintf(led, "led->ops->set_color: Error %x\n", hr);
}
fail:
/* No response */
return S_FALSE;
}